Celebrity Fly, Swim and Underground Adventure

[Dynagirl]

My sister and I are planning to take this shore excursion while visiting Cozumel on our Celebrity Summit cruise in November. We have not been able to find any reviews and would love to know more details on this tour.  We are unsure what we do with our belongings (towels, cameras, phones) while participating in the various activities.  Are there lockers? Can you take cameras etc.  Any comments on this excursion would be helpful. TIA

[c-leg5]

Presumably this is at Xplor on the mainland? Maybe more details there? Hopefully someone can confirm.