When we first started going there, if you resided at one of them you had access to the other as well as the big pool/exercise facilities at the Sonesta. On our last stay, access to the Sonesta was restricted due to their AI policy.

I would assume that if you are at either RI property, you still have access to the other but that would be a better question for management. The properties used to use different colored pool towels so it was easy to see who is from which resort.

The beach is public.