In order to be a part of this flash mob of delicious overconsumption, you do not need to learn a tightly choreographed version of the Roger Rabbit (though, generally speaking, that is useful to know). But you do need to be very excited to celebrate the Fort Point Mexican resto becoming the first in Boston with their own private-label tequila: a double-barreled Reposado the owners handpicked from Herradura with notes of caramel, butterscotch & orange that gives off a "spicy and wet earth" taste.
So once you've figured out what "wet earth" tastes like, plunk down an Andrew Jackson and a Hamilton (or if you prefer, five Lincolns and five Susan B. Anthonys) for your ticket, then prepare to:
1) Pick a time slot (1p, 5p, 9p), and an hour before then, they'll email blast the secret location. But if you fear traveling to Wellesley after dark, fear not: Papagayo promises the party will be within a half mile of their Summer St resto.
2) Receive seven food and drink tickets at the locale. This is kind of an awesome deal, since beers and food (specialty apps, quesadillas, burritos) cost only one each, while 16oz margs and tequila shots cost two. Meaning you could technically get seven beers. Or five beers, a burrito, and a shot. Or seven burritos. (Note: Maybe don't get seven burritos.)
3) Finish those seven burritos as you -- unlike the crowd watching Russell Crowe in Gladiator -- will be entertained by prize giveaways and live music ranging from mariachis to a DJ so well-known, he's bound to be mobbed in a flash.