The following is a short list of some of the events coming up in the next few months. Visit the Royal Resorts blog for the complete 2013 listing

Mexican Caribbean Fishing Season begins (help protect species by practicing catch and release fishing)
Second Cancún-Riviera Maya Wine & Food Festival, Cancún, March 14-17
Equinox, Chichen Itza, Yucatán, March 20, 21 (sunset)
Equinox, Dzibilchaltun, Yucatán, March 20, 21 (sunrise)
(Note: Also visible the day before and the day after the Equinox, depending on the cloud cover)
Earth Hour, March 23

Riviera Maya Film Festival, Playa del Carmen, Tulum, Cancún & Cozumel, April 21-27
XLV Regatta Sol al Sol from St Petersburg, Fl., Isla Mujeres, April 25 – May 3
Cancún Fishing Tournament, Cancún, April 26-28
Open Water Swimming Marathon, World Open Water FINA 10 km event, Cancún, April 27

Sea Turtle Nesting Season begins in the Mexican Caribbean
Festival of the Santa Cruz or Holy Cross, Cozumel (April 28-May 3)
Feria del Cedral. Cozumel, May 1 – 8
Seventh Copa del Rey, El Rey Polo Club, Puerto Morelos, May t.b.c.
Cesar Martin Rosado Fishing Tournament, Puerto Morelos, May 3-5
Whale Shark Season begins, Holbox, Isla Mujeres, May 15
Dates are subject to change without prior notice