How Do Hotel Room Blocks Work for an Event?
If a meaningful share of your guests are coming from out of town — very common for events in a visitor destination like New Braunfels — you will hear the term room block. Let's define it, distinguish the two kinds, and walk through the mechanics in order.
The definition
A room block is a set of hotel rooms reserved under your event's name at a negotiated rate, which your guests book individually — usually with a group code or a booking link — until a cutoff date. After the cutoff, unbooked rooms return to the hotel's general inventory and the group rate typically disappears.
The two kinds, and why the difference matters
Courtesy block. The hotel holds a modest number of rooms — often around ten to twenty — at a group rate, with no financial obligation to you if guests do not book them. Unbooked rooms are simply released at the cutoff. This is the standard arrangement for weddings and reunions, and for most social events it is all you need.
Contracted block. The hotel commits a larger number of rooms, and you sign a contract that may include an attrition clause: a commitment to fill some percentage of the block, with you paying for the shortfall if bookings fall below it. Example: a 50-room block with 80 percent attrition means that if your guests book only 30 rooms, you may owe for the 10-room gap. Hotels offer contracted blocks because they are setting aside real inventory; the attrition clause is their protection. It is also the single most important thing to understand before signing one — and a contract worth professional review for a large event.
The teaching point: courtesy blocks shift the risk to the hotel; contracted blocks shift it to you, usually in exchange for more rooms or a better rate.
Setting one up, step by step
1. Estimate honestly. Count likely out-of-town households, not guests, and remember that some will use points, stay with family, or book elsewhere. A common rough planning assumption is that only a fraction of eligible guests — often somewhere near half — book inside the block. Start smaller than your instinct suggests; most hotels will add rooms to a block that fills far more easily than they will forgive an attrition shortfall.
2. Contact hotels early, especially for peak dates — see how the local calendar concentrates demand. Ask each hotel: courtesy or contracted, the group rate, the cutoff date, and whether the rate extends a night or two on either side for guests making a weekend of it.
3. Compare in writing. Get each offer on paper. Watch for parking fees and any attrition or deposit language.
4. Publicize the cutoff relentlessly. Put the booking link and the cutoff date on your invitations, event website, and reminders. The most common failure is guests calling two days after the cutoff.
5. Check in with the hotel before the cutoff. Ask how many rooms are booked. If the block is nearly full, ask about adding rooms; if it is nearly empty and contracted, this is the moment to talk with the hotel about options — not after the deadline.
The exceptions
1. Two blocks beat one big one. For mixed budgets, a modest courtesy block at each of two hotels at different price points often serves guests better than one large block.
2. Peak season changes the terms. During high-demand weekends, hotels may decline courtesy blocks, shorten cutoffs, or require minimum-night stays. That is a property of the calendar, not a hostile hotel.
3. Blocks are not always worth it. For a small event, or one where guests' dates vary widely, a simple list of nearby hotels on your invitation may serve better than any block.
Handled early, a room block is one of the highest-comfort, lowest-cost things you can arrange for traveling guests. Handled late, it is a cutoff-date scramble — so make it one of your first calls, right after the venue questions.