Attractions
While we did not explore Isla Mujeres, the staff at the resort spoke highly of the island and recommended visiting for snorkeling or diving. There are also various sites to see, like the Punta Sur, which houses the ancient temple honoring the Mayan Goddess Ixchel.
You can coordinate transportation to the island through Lomas Travel (same company providing transportation from the airport to the resort)
You should have seen my face driving past the Rafa Nadal tennis centre when driving into the resort - it is only 3 miles away! You could consider touring the museum on site, look into receiving a tennis lesson or stop through the store or cafe.
While we did not venture off the resort to explore nearby sites, I spent time looking into nearby locations that may be worth an exploration. If you would like to take the time to explore Mayan ruins, this may be worth looking into.