I have read some of them. Some are a bit old so I discount those. The newer ones didn't exactly answer my questions. That is why I asked it the way I did. Basically, the answer is I will need transportation (eg, taxi or boat) to get to a beach with real sand.
Also, the beach clubs you get to by taxi have to be booked All Inclusive or you don't have a real reservation.
Finally, it looks like even though it is more travel time, Isla de Pasion better meets my requirements.