We make a flat session rate, multiplied by the number of sessions we coach. We are reimbursed for parking expenses, and if it is a travel meet, gas/plane tickets and hotel stays are covered, and we receive a per diem check with a set amount for each breakfast, lunch, and dinner. I don't remember the numbers off the top of my head, but since I am an intermittent faster who only eats one meal a day, I pretty much always pocket a bit of cash here. We bring receipts for gas and parking, but if a hotel or flight is required, the gym books it with the owner's credit card, so no reimbursement is necessary. These things are calculated before the season starts and are divided by the number of athletes into their team fees for the season, along with the cost of the leotard and warm ups.