That is our plan too. Cab to town, walk through the town and go to Pez Quadro at the far end for lunch and beach. I've read that the beach is nice and the food is good. That makes us happy.
For Cozumel we are thinking of the All Inclusive at San Fransisco beach club. Things for the kids to do, a pool, the ocean and lots of food and drink. They also have clean bathrooms and showers. We have not booked it yet, but may do so within the next few weeks.
I'm still researching......
Connie