New to working with tour operators or receptive tour operators? This guide explains how travel trade blocks allocations, release dates, and attrition policies work—and shares practical lessons of inventory management I’ve learned after more than 27 years in travel trade. For an overview of working with travel trade, check out Destination British Columbia’s Working with the Travel Trade Guide.
In This Guide:
New to Travel Trade? Your First “Block” Request Is a Big Moment
If you’ve just come back from Rendezvous Canada or another travel trade marketplace, there’s a good chance your inbox is starting to shift.
Instead of general enquiries, you might now receive something more specific, such as:
- “Can we secure 10 rooms on these dates?”
- “Can you allocate blocks for our summer departures?”
- “Can we hold inventory for weekly tours in July and August?”
For many tourism businesses, this is the moment where travel trade starts to feel real.
It is also where the jargon begins. Travel Trade Blocks. Wholesale. Inventory Managements.
When I joined the tourism industry in 1998 as a Tour Coordinator, one word seemed to follow me everywhere: blocks.
My manager would ask me to request blocks, increase blocks, reduce blocks, or release blocks. I nodded along, pretending I understood, then quietly tried to figure out what everyone was talking about. Back then, Google wasn’t much help, and there certainly wasn’t an online guide explaining travel trade terminology.
More than 27years later, I still think “blocks” is one of the most important concepts for tourism businesses beginning to work with wholesalers.
What Exactly Is a Block?
Travel Trade Blocks are a core part of wholesale tourism distribution. They determine how inventory is allocated, sold, and released between tourism suppliers and tour operators—and directly impact revenue control, availability, and long-term partnerships.
Simply put, a block is inventory that you agree to reserve exclusively for a wholesaler before they have sold it to the end customers.
That inventory might be:
- hotel rooms
- seats on a guided tour
- spaces for an attraction
- A fixed departure activity
- transportation seats
The quantity, service dates, rates, release dates and other conditions are all negotiated as part of your wholesale agreement.
On paper, it sounds straightforward.
In practice, it’s one of the biggest acts of trust between a supplier and a wholesaler.
Blocks Are Not About Inventory, They are a Trust Mechanism
Over time, I’ve come to see blocks differently than I did early in my career.
They are not just an operational tool.
They are a trust mechanism between suppliers and wholesalers.
Tour operators need confidence that:
- they can build itineraries months in advance
- their pricing is stable
- availability will exist when customers book
Suppliers need confidence that:
- inventory will convert into real demand
- contracted space will not sit unused indefinitely
- revenue risk is managed through proper release terms
When both sides trust the system, blocks work well.
When they don’t, the entire partnership becomes strained.
Why Wholesalers Ask for Blocks Before They Sell Anything
This is one of the biggest mindset shifts for suppliers new to travel trade.
Tour operators do not wait for bookings to appear before building products. Lots of things will have to happen before that.
They:
- design full itineraries in advance
- package multiple suppliers together
- publish pricing months ahead
- distribute through travel advisors and platforms
That means they must secure inventory before they go to market.
From their perspective, they are not “asking for inventory early.”
They are protecting their ability to sell what they are about to publish.
Without blocks, they risk:
- selling products they cannot confirm later
- changing prices after publication (which damages trust)
- losing credibility with clients
I’ve seen this situation many times over the years. Once a brochure or package is published, there is very little room to adjust availability or pricing without consequences.
What Actually Happens After You Allocate a Block
This is where theory meets operations.
Once you agree to a block:
- that inventory is removed from general availability
- it becomes reserved for the wholesaler
- other inquiries for those dates may need to be declined or managed
- the wholesaler begins selling it through their channels
As travel dates approach:
- the wholesaler confirms actual bookings
- used inventory is finalized into reservations
- unused inventory is returned based on your contract terms
At the end of the cycle, remaining space is released back into your system for resale.
On paper, it is a clean process.
In real operations, it requires constant communication and good discipline on both sides.
How Many Blocks Should You Allocate?
There is no universal formula—and anyone who tells you otherwise is oversimplifying it.
In practice, I always encourage suppliers to think through four realities:
1. How strong is your product demand?
If your product already sells out easily, your leverage is higher.
If you are still building awareness, blocks may help you enter new markets faster.
2. Who is the wholesaler?
Not all partners bring the same value.
You should consider, quietly of course:
- their source markets
- their distribution strength
- their customer profile
- whether they already sell similar products
Sometimes the question is not “how much should I give,” but “is this the right partner to scale with?”
3. What is your real capacity cost?
This is where many new suppliers underestimate the trade-off.
Every block decision affects:
- direct bookings
- peak season availability
- cash flow timing
- long-term yield strategy
I often remind businesses: wholesale rates are not just discounts, think of them as part of your distribution and marketing investment. and the cost associated with it should be considered too.
4. How does seasonality affect your business?
Travel trade can be extremely effective at:
- filling shoulder season
- extending operating periods
- stabilizing demand across the year
But it only works if there is enough product consistency for wholesalers to build sellable programs.
Selective availability (only low season or fragmented dates) often limits what wholesalers can realistically promote.
Setting Release Dates and Attrition Policies (Where Experience Really Matters)
If there is one area I always encourage suppliers to think carefully about, it is this one.
Release Dates
A release date defines when unused inventory returns to you for resale.
A good release strategy considers:
- your typical booking window
- how quickly your direct channels convert
- your risk tolerance for unsold inventory
If release is too late, you lose sales opportunities.
If it is too early, wholesalers cannot effectively sell the product.
It is a good idea to discuss this with the client to have some reality check.
Attrition Policies
When blocks are large, release dates alone may not be enough protection.
Attrition policies help balance risk by defining:
- how much inventory can be released without penalty
- what happens close to travel dates – dates that would allow attritions happened before the cancellation deadline
- cancellation thresholds and financial responsibility
I’ve seen many contracts where suppliers focus heavily on rates—but underestimate how much revenue protection is actually embedded in these clauses.
In my experience, this is where the most expensive mistakes might happen.
There is no standard formula. It depends on:
- demand patterns
- inventory size
- business model
- seasonality
- historical booking behaviour
Final Thoughts: Blocks Are About Partnership, Not Just Inventory
After more than 27 years in travel trade, I’ve learned that blocks are rarely the real issue in a contract.
They are just the visible structure.
What actually determines success is:
- clarity of expectations
- alignment on markets
- realistic inventory planning
- ongoing communication between partners
When those pieces are in place, blocks become a powerful growth tool rather than a constraint.
If you are navigating your first wholesale contract and are unsure how much inventory to allocate or how to structure your release terms, it is worth stepping back and reviewing the full picture instead of just the numbers on the page.
From the Field
One thing I’ve learned over the years is that the best wholesale agreements aren’t necessarily the ones with the highest rates or the lowest rates. They’re the ones that both sides can operate successfully months and years later. Clear expectations, realistic inventory planning, and open communication almost always outperform aggressive negotiations.
If you’re preparing your first wholesale agreement, debating how many blocks to allocate, refining your release and attrition policies, or building your overall travel trade strategy, I’m happy to be your sounding board.
Let’s connect and explore how I can help your tourism business build stronger, more sustainable travel trade partnerships.
About the Author
Leona Zheng is the founder of Meridian Span Strategic Advisors and a tourism consultant with 27+ years of experience in British Columbia’s tourism industry. She specializes in travel trade development, international market readiness, tourism products strategy, and Chinese digital marketing. She supports tourism operators and destination organizations in expanding global market reach, strengthening travel trade partnerships, and improving competitiveness through practical, hands-on consulting.