Honeymoon help! Had to cancel cruise 3 weeks out due to surgery

Hello! So my wedding is in 3 weeks and my fiance just had to have surgery on his knee due to an ongoing problem from ACL repair. We originally had a cruise booked the week after the wedding, but now have to cancel it due to the surgery and him being unable to get in bodies of water and walk much. We are looking for recommendations around the US of places we can go and see things but not have to walk a ton and doesn’t involve water. We are pretty open to anything! Probably just a 5 day trip or something. Thank you in advance!