The decision-latency graph of a group trip looks like a hockey stick. Then it flatlines.

Open the average group trip's planning timeline and you will see a familiar shape: very little activity for a long time, then a sudden burst, then nothing.

This is not a coincidence. It is the structural rhythm of group decisions, and it has implications for anyone trying to design tools for them.

What the data shows

We tracked planning activity — votes, messages, bookings — across 4,200 trips planned in MyPerfectStay between September 2025 and March 2026. Then we plotted the time-from-creation curve.

The curve has three distinct phases:

1. The doldrums. Days 1 through 11. Activity per day: low and roughly flat. Groups suggest options, weigh dates, debate budgets. Nothing locks. Average decisions per day: 0.3.
2. The commit spike. Days 12 through 17. Activity rises 8x. Dates lock. Hotel goes in. The plan starts to fill. Average decisions per day during this window: 2.4.
3. The afterglow. Days 18 onwards. Activity collapses. The trip is functionally booked. Remaining activity is small adjustments — adding restaurants, swapping a museum for a market.

The shape is, by happy accident, a hockey stick — though one with a flat handle and a short, sharp bend.

Why this matters

If you are designing a planning tool, the implication is simple: the doldrums are not the problem to solve. The doldrums are the group acclimating to the idea of the trip. Pushing them to commit faster is, paradoxically, the thing that kills trips.

The commit spike is where the tool actually earns its keep. Whatever friction lives in those five days — payment splits, calendar invites, cancellation policies — directly determines whether the trip happens.

We redesigned MyPerfectStay's checkout flow last quarter to remove three steps that were sitting precisely in this window. Booking conversion rose 31%.

The mid-week finding

The other thing the data showed, surprisingly: the commit spike usually happens on a Tuesday, not a weekend. Our hypothesis is that weekends are when people talk about trips. Tuesday afternoon is when somebody, alone at their desk, decides to just book the bloody thing.

If you market group travel and you are still front-loading your campaigns to Sunday morning, this is your sign.

Coming next

We are publishing a follow-up in May on the kind of trips most likely to flatline in the doldrums and never reach the commit spike. The most common signal is, predictably, the absence of a clear initiator. The second most common is a group size of exactly four.

Four, it turns out, is structurally indecisive. We have theories.