The cost depends on the venue, 50-70 people, usually 10 people for a table, that is, 5-7 tables. A table of dishes is usually 12 dishes, and the dishes are determined by the price. You can quote a price to the hotel manager. Generally, the hotel ordering manager can prescribe 12 dishes within your price range. Usually every table starts from 800 yuan. . . . . It's hard to say whether there is a cap or not. If you want lobster, shark's fin and so on, you have to wait for 2000k+ a table.
Ps: If the price is affordable, I recommend the Lijing Garden Hotel, which is located in Huajie Street. There are 6-7 tables around the hotel swimming pool. The atmosphere is very good and western. . . But you must make a reservation long in advance. . . .
If you can just go to any hotel, the sleepless hotel in Washington will be more affordable.