USA vacations

We need some vacation ideas please!! My bf and I are planning to go somewhere (just us) but can’t decide where. We’re from Iowa. Looking for somewhere within the United States. So far together we’ve gone to Kansas City and Mall of America in MN. So I think we’re looking for something more like a resort/beachy. Disney is also on our list. I have NEVER been on a plane so it kind of makes me nervous but 🤷🏻‍♀️ Let me know some places we can look into and if you don’t mind sharing a general cost estimate (if you’ve been to any of them) thanks!