re: Any tips on things to see/do in Playa del Carmen area?

I just got back from playa a week ago. Beautiful weather the entire time. We went to xplore and did the zip lines. It was very fun and there are a couple of other things to do (ATV riding and paddle boating inside of a cave). Our resort got us a taxi but the drop off / pick up time was 830 am - 430. We started zip lining around 9 am and were finished with all activities & lunch at around 1-130ish. Just keep that in mind when you're planning your day. I hear tulum is great, we are planning to go there next time we go to playa. Have fun!