Allergies, religion and genuine diet requirements such as veganism aside aibu or is it really, really rude to say you don't like or don't eat something if you aren't the host?
We are hosting friends and I have been given a list of things they don't like. I've never done this, there's things I hate bit would eat if it was being served to me and especially if I wasn't paying or contributing. Only one couple has done it but its really annoyed me as we have already got the food in and now I feel like telling them to make sure they have tea before they come ( although I won't do that ), I'd put loads of effort in and a lot of expense and I can't see why grown adults can't keep their preferences to themselves.
Yabu - it's fine to let someone else put loads of effort into hosting and time and money only to then say 'don't like that/won't eat that' like a rude teenager
Yanbu - it's rude