I LOVE cauliflower wings, too! There is a great restaurant here in the Bay Area, called Fog's Kitchen (http://www.fogskitchen.com/) and that was where I had them for the first time. So spicy...so good!
I've yet to go to Playa del Carmen, but now I know one place to go if I do! Cheers and safe travels (and happy eating).
Yeah, they are so delicious. I think they are really catching on now. My brother who is a meat eater, loves them as well, just so much lighter on the stomach as well. If you visit Playa let me know I'll give you a list of all the great veggie restaurants and show you a few hidden gems. Cheers!!