My daughter has been invited to a party for a child whom we're not particularly close with, but I think it's a lovely gesture. It's being held at an attraction and the invite says one adult per child included, extra guests to be booked in advance. Would it be rude if I asked if my husband can come too and we'll happily pay for him? Not sure what the etiquette is with these things. Or should I just contact the attraction and book him in? Or will it look bizarre and is it mainly one parent and child at these things? Evidently I have zero clue about these things