Am hosting a party for the parents 40th anniversary coming up. About 80 in attendance, and its in the function room of a nice local restaurant. For the venue, food, and band, we've paid over £1000, and now we have the dilemma of will people be expecting a free drink(s)? We can't bring our own alcohol, and the restaurant quoted us an additional £350 just for a glass of prosecco on arrival. Unsure on etiquette here. Will guests arrive expecting a cash bar? i didn't put anything on the invite. If theres not at least wine on the table will some people think thats... rude?? Should we put some extra £££ behind bar?