We will be staying at the Poly in a month or so. My parents will be at Saratoga Spings. If we are planning for a pool day one day, will my parents be able to join us as a guest?
In general, no you cannot have guests at the pool. It never hurts to ask the gate keeper or lifegaurd if you ca have your parents join you, however you need to be prepared to hear they cannot. These pools are popular and can get crowded, so the policy is tha tthe are for the use of resort guests only.
If either you or your parents have the space in the room to add the other party to the room, you would be able to swim at that resort (where you or they were added to the reservation). Otherwise, no. Even DVC members cannot pool hop to the Polynesian. If you are a DVC member staying on your own points at the Polynesian, you could join them at SSR. If you are renting points, DVC member perks do not apply.