Trying to map out an itinerary and then figure out if renting a car or taking taxis makes more sense. Staying at a place on southern end of Tulum that does have beach service, so we'll spend some time there relaxing. And staying over a Sunday so will try to find the local branch.
Other than that...pretty open. Have gleaned from previous posts here that the cenotes are a must do, tours of ruins via one of the LDS groups (Tulum, Coba, Itza), heard about some of the bigger parks starting with X (Xplor, Xel-Ha, etc.), and snorkeling in Akumal.
Curious to hear from any who have done those or other things they loved in the QR area so we can hone in on exactly which ones to do. Thanks!