Wow, that's so cool! I loved eating coconuts on my travels, but never opened one myself.
The last time I had a fresh coconut was actually in Malaysia, I was couchsurfing (well, tentsurfing actually) with a guy living on a beach, he was a super funny guy. He did a show opening coconuts and sold them to tourists :D That's a photo of him in action:
Cool story and photo Julian! :D I did quite a lot of CS in the US back in 2010 but tentsurfing on a Malaysian beach (with this guy) sounds like a decent adventure! :D But yeah, picking, opening and eating/drinking a coconut by yourself is a great experience :) Come to visit us and I will give you a tutorial on that :D
I will definitely come to Mexico, but it will probably be not earlier than three years from now, I doubt you will still be there..