What happened to people actually doing the entertaining at a party? I'm the same if we have a dinner or BBQ friends will always turn up with a bottle of something plus will usually bring steaks or special meat but its not expected. You have a party, you cater for your guests, especially an engagement party. That's what being the host of a party is. Otherwise what are you supplying, the tables and cutlery so guests can bring their own dinner.. And drinks.