Unfortunately we are staying at Secrets Isla Mujeres Oct 07 through the 12th and would like to visit TRR. Do they have a day pass?
I think that you'll find that is probably less expensive and more convenient to just get a room for the night.
Typically, they do have a pass; however, it depends on the time of year and how booked the resort is. Also, be careful of the times of the pass that are offered. Just make sure that you do not miss your time to catch the ferry back ! Ang