i like the downstairs bar at the bottom of main, i went there during sundance a couple years ago and the crowd wasnt bad. i dont remember there being a cover either so that must be new.
i also went to wasatch at the top of main, got in and got a table no problem, definitely recommend heading up there for a pitcher or two. i was pretty drunk after that, cant remember exactly where we went, but there are many other bars on main. parking is a total BEYOTCH though.
sundance is a shit show though, TONS of people on main, dont anything stupid either because there are a fuckton of cops as well. friend got yelled at for jumping up on the moose statue for some pictures. have fun scoping out some cougars.