Safety is fine in the tourist areas around the yucatan.

I loved xel ha. It is a snorkling, scuba park wit cenotes you can swim in. Had a waterproof camera, took great pictures until it decided to not be waterproof and fog up.
I am sure there are other parks like this one.

The ruins were actually boring for the money. You can get great shots though but that is about it.

Sidenote, US would not have an issue with illegal immigration if some of those fine latinas would come over. My lord, I went to a rave in playa with one of the female life guards I met, literally 1000s of beautiful women. And the rave was awesome, more of a eu dance party. Plus they loved my drunk ass, cause the rest of the night went great and I woke up with all my kidneys.

It could be also because playa has tons of americans living and working there to.