How many hats do you need for a party?
Rule of thumb: expect 85–95% of confirmed guests to make a hat, and stock 10–15% more blanks than that so the last guest in line still gets a real choice. For a 40-person party, that's roughly 42–46 hats on the table. We run this math for you in every quote — but here's the reasoning, because hosts deserve to check our work.
Participation by party type (our actual numbers)
- Bachelorettes: ~100%. Matching hats are why the bar was booked. Everyone presses, and about a third come back for a second patch.
- Birthdays: 85–95%. A handful of guests always “aren't hat people” — until hour two, when half of them cave. Stock for the cave.
- Graduations & family parties: 80–90%. Multi-generation lists run slightly lower, but grandparents out-participate every prediction, every time.
- Big open houses: 70–85%. Come-and-go formats mean some guests only stay twenty minutes. Longer windows recover most of them.
Why the extra 10–15% isn't padding
Two reasons. First, choice decay: if you stock exactly one hat per guest, the final guests pick from whatever's left, and the last person gets “the leftover hat” — a bad ending for a great activity. Second, plus-ones happen. Every party has two RSVPs who bring somebody. The buffer means the surprise guest gets the full experience instead of an apology.
Sizes and styles: how the mix breaks down
Most of our lineup is adjustable (snapback truckers, strap-back dad hats), which removes sizing risk almost entirely — one reason live hat bars beat pre-ordering fitted hats in guessed sizes. If you want Flexfit fitted styles or youth caps for kids, tell us and we'll blend them in at sensible ratios.
The best part: leftovers are yours
Unpressed blanks don't ride home with us — they're in your package. Hosts usually press a few at the end for no-shows they love anyway, or keep a stack for the next gathering. Nothing you paid for leaves the property.
Related reading: what the whole thing costs and the full hat and patch lineup.