There is no slide in the RPH but there are slides at the HR and the Portofino. There is a ship that spews water out, has water cannons, and wheels that turn. My kids had fun on it.
That is good news !!!! - about being able to use the other hotel pools.
Not like at the Disney resorts where you can only swim at the resort where you are staying.
Would someone really want to drive to another resorts pool? Or are they all in walking distance of each other? Seems easier just to enjoy your own resorts pool.
The three hotels are quite close. You can take the boat or bus from one to the other. The walk from RPH to PBH or HRH is too far but you could walk from HRH to PBH (about 10 minutes). Lots of people like to spend hours at the pool and for them it would be worth the short trip.