Question about RIU Hotels in Cancun

Hello!

If I stay at the Riu Caribe hotel, will I have access to the other RIU hotels in Cancun? Will I be able to visit other RIU hotels and spend some time there (eating and drinking at the all-inclusive)?

And if I stay at the Riu Latino (Playa Mujeres), will I be able to visit the other RIU hotels in Cancun?

Thank you.