A simple planning framework for annual meetings and corporate events, with real data from a 600-guest conference we served at the Waldorf Astoria Orlando.
When a client says "we have 500 guests and want a coffee bar," the first question we ask is how many hours. Guest count tells us how many drinks to expect, but the hours tell us how fast we need to serve them, and that decides the number of carts. Too few carts and you get a long line that ruins the break. Too many and you pay for idle equipment. Here is how we size it.
Not every guest orders, and some order twice. Two numbers drive the estimate:
At the Cyera conference, 5 carts served 540 drinks to 600 guests in 2.5 hours. That is 0.9 drinks per guest and an average of 216 drinks per hour across the event. Read the full Cyera case study.
For 500 guests we plan with 80% participation and a 15% repeat rate:
A Take a Shot cart with professional baristas serves 50 to 70 drinks per hour. We plan with 50 per hour to stay conservative, so the extra speed becomes your buffer on the day.
Dividing 460 drinks by 4 hours gives 115 drinks per hour, but guests do not order evenly. The agenda decides the number of carts.
Guests drift in and out. Demand is fairly flat with a small peak at arrival. Average demand is about 115 drinks per hour, and the peak hour runs near 160. At 50 drinks per cart per hour, you need 4 carts.
About 60% of drinks happen inside the breaks: roughly 276 drinks across two windows, or 138 per 30-minute break. That is a pace of 276 drinks per hour. You need 5 carts to keep the line moving.
Coffee is the welcome moment, and 40% of drinks happen in the first 30 minutes: about 184 drinks. Plan 5 carts and expect a short line during the first 15 minutes that clears as the room settles.
No event has zero wait. At peak moments, like the first minutes of a break, guests will queue for a short time, and we plan for that wait to stay around 5 minutes or less. If the math says guests will wait longer, we add a cart. That is how we make the final call.
Between 4 and 5 depending on your agenda. Open service all day needs 4 carts. An event with scheduled breaks or a big arrival rush needs 5.
Plan for 70 to 90%. At a recent 600-guest conference we served 540 drinks, about 0.9 drinks per guest.
Our carts serve 50 to 70 drinks per hour. We plan with 50 per hour to stay conservative.
Send us your guest count, schedule, and break times, and we will size the cart count for your agenda.
Request a Quote