We have been to Cozumel several times, so this year we just got a taxi and headed to Paradise Beach. For $2, you get a beach chair for the day, and the staff will bring you as many $7.50 drinks as you want! The real bargain was the $12 wrist band that gets you unlimited time on the inflatables in the water, the trampoline on land, kayaks, snorkels, and floats. They really have a good set-up for enjoying a wonderful beach day, including wi-fi at the bar, if you want to send a quick email back home. I highly recommend it. The taxi for 6 of us was $28 each way.