best transportation cozumel

[ScubaAl]

will get you there. I dove with Rollie some years back. A bit on the unorganized side, took away from the enjoyment. We dove the north end, and the cave south of town.
For dinner one night check out El Moro 75 Bis Norte #124 between 2 and 4th. Not open Thursdays. Need a cab to get there but will be well worth it.
As far as diving goes,  all dives are guided, so don't expect to go at it alone (except shore). Maybe someone knows of an exception, but I don't.
                                                                  Al