Agreed. There is no room to dance. If you want to dance you have to upgrade to a VIP section. It will still be tight but a bit more room to wiggle, wiggle.
I did the Cancun to Playa del Carmen a couple times but can't remember the price! Ballpark figure is $50USD each way. I am being conservative here because I think I paid less. The ride is anywhere from 30-45 minutes depending on traffic. The other option is taking the bus. There is a bus depot that will take you right there. The cost is about $5USD and the depot is not far from TTR. There are no stops along the way and brings you right to the action on 5th Ave. We LOVE 5th Ave. Lots of small bars and a few big ones!