On Monday morning, we awoke with an itinerary full of plans and a sky full of clouds. We looked to the heavens imploringly, begging for no rain, but before we'd even lowered our clasped hands, the storms began. And they didn't let up the entire day. Undaunted, we stuck to our schedule, and visited Isla Mujeres' touristy sights. But we'll be honest: this was a miserable day.