BostonEatBBQ & Tunes on the CharlesBy ThrillistPublished on 9/17/2008 at 4:00 AMHit the final underground dance party on the water -- with $3 beers, copious BBQ from Roggies, six DJs, four turntables, two mixers, and at least three port-a-potties, which you should use, even though this party's totally on the water.