Suggestions on bottles

We have a friends wedding coming up in September no kids aloud but some one refuses to use a pacifier and bottles.... we’ve tried so many different ones in all shapes and sizes but he gags to the point of puking with pacifiers. That isn’t a big deal at least we wont have to break him of those. But with bottles he just chews on the nipples and I’m grateful I get to be a stay at home mom cause at this point idk what to do to get him to eat a bottle, guess it’s mommy until we learn to drink from a cup 😂 any suggestions would be fantastic!!