I like the concept; the Amazon hub is a great idea
My wife and I spent some days last week on what you described, with some variations
A cruise ship
Nearly any time of the day, I could eat, watch a movie or a show, shop, spa, gym, swim, lay by the pool, play some sports (paddle ball), walk*, etc. Even gamble (no, we don’t)
(Note: This was a ‘small’ ship; more adult oriented)
And yes, it was wonderful!
So I think your idea has some real potential. (Having a segment of a senior complex would be interesting)
*Mr Science Teacher, I learned something! I can do a 5 minute mile! My Apple Watch assured me I had. Oops. Forgot. Outdoor walk mode uses GPS for tracking mileage. So walking on a moving ship while measuring distance via GPS..🤣🤣