In case you missed it, here's our list of ways to celebrate Cinco de Mayo around town; if you aren't in the mood for margs tonight, here are some alternatives: EVENT: NonsenseNYC points us to a Potluck and Horseshoe Crab Mating Bike Ride. Need more details? "For over 300 million years, when high-tide, the full moon and springtime collide, horseshoe crabs have been gathering by the thousands to spawn. These little dinosaur tanks are expected......