While I haven't stayed at either the Marriott Royal Palms or the Sheraton Vistana Villages, I have stayed at the Marriott Sabal Palms several times (also on the World property) and the Sheraton Vistana Resort also several times, which is directly behind the Marriott World hotel and time shares.
The Marriott World pool is amazing! The giant pool and slides are open for all Marriott property guests, however the World center guests cannot use the time share pools, (Sabal, Royal and Imperial) which makes them more quiet and relaxing. The Royal and Imperial buildings are a little farther from the World pools and amenities, the Sabal is closer and within easy walking distance. The Royal and Imperial guests usually take the complimentary shuttle to the World. The Sabal has it's own pool, super quiet and relaxed! I *think* the Royal and Imperial share a pool. I'm not certain on that, as we've never stayed at them, but we have visited. I know the Sabal has a fitness center, but I'm not sure of the Royal. The entrance to the whole Marriott complex is on Rt. 536. There's not much around on that strip of road, which becomes Epcot Center Drive once you cross over I4.
The reason I brought up the Sheraton Vistana Resort is because it may suit your needs and its part of the Marriott/Sheraton timeshares. The SVR and the Sheraton Vistana Villages often get mixed up because the names are similar, but the SVR is closer to Disney property, Disney Springs, and directly behind the Marriott property with their entrance located on Rt. 535 and there are loads of restaurants and shops nearby. The resort is beautiful and very "active", IMO. More so than the Marriott timeshares. There is a whole thread on here about SVR:
SVR Thread
We stayed at the SVR three times since last May 2018, that's how much we love it! I feel like the Marriott timeshare Palms (Sabal, Royal, Imperial) are super low-pace and the "action" is at the World Center. My kids were late teens- early 20's the first time we stayed at the Sabal years ago and they walked to the World pool a lot during our stay because there was more to do. They have all been to the Sheraton Vistana with us and feel there's a lot more to do without having to walk a lot or take a shuttle.
We LOVE both the Marriott Sabal and SVR and you can't go wrong with either. Not trying to change your mind, just giving you another property consideration that may work for you. Especially for a non-Disney vacation.
HTH!!
