The time of year and day of the week play a large role in overall cost. High demand seasons like late summer and early fall are costlier than off-season times. Similarly, expect greater savings if you choose a Friday or Sunday to get married instead of the popular Saturday.
A large guest list means more of everything: space, rentals, number of servers, etc.
Your facility fee includes overhead costs like staff wages, training, taxes, maintenance, linens, serviceware, various licenses, and insurance.