My inlaws are super go with the flow. They've done wdw with all of my husbands siblings and their families(he's the youngest of 7) so they have no preferences. Lol. They've done it all, and are really just going so they can be with us and my son on our first trip. They'll also keep our 2 year old quite a bit if we'd like, so we can go do adult rides and dates and such(I won the in-law lottery) I've asked them and they always reply something to the extend of "whatever you want." I do think we'll rent a car so that they can go places easily.