How much revenue does a coffee shop in a busy airport terminal make in a day?

At a busy terminal there's a line most of the day, so I'll size this by how many people the shop can serve, not by how many want coffee. Revenue is customers served times average spend. I'll say the shop is open 16 hours a day, since terminals are busy from early to late. That's 5 in the morning to 9 at night. It serves about 1,300 customers in that time. Here's how I get there. With two registers each taking about a minute per customer, the shop can serve 120 people an hour flat out. It won't be full all day, so I'll say it averages 80 an hour. 16 times 80 is 1,280, which I'm calling 1,300. I'll put the average spend at $10. A coffee is $5 or $6 at airport prices, and about half of customers add a pastry or a sandwich. So 1,300 times $10 is $13,000 a day. I think that's a sensible figure.

At a busy terminal there's a line most of the day, so I'll size this by how many people the shop can serve, not by how many want coffee. Revenue is customers served times average spend. I'll say the shop is open 16 hours a day, since terminals are busy from early to late. That's 5 in the morning to 9 at night. It serves about 1,300 customers in that time. Here's how I get there. With two registers each taking about a minute per customer, the shop can serve 120 people an hour flat out. It only runs flat out at the peaks, which are the early morning wave and late afternoon. Say that's 6 hours at 120, which is 720. The other 10 hours I'll put at half speed, 60 an hour, which is 600. Together that's 1,320, so call it 1,300. I'll put the average spend at $10. A coffee is $5 or $6 at airport prices, and about half of customers add a pastry or a sandwich. So 1,300 times $10 is $13,000 a day. To check it from the demand side, a busy terminal might see 30,000 departing passengers a day. 1,300 customers is about 4% of them, which seems plausible when there are several other places to buy coffee. Over a year that's about $4.7 million. That's high for a coffee shop, but an airport is about the best location there is.