Tuesday night is cast member night at Jellyrolls, and it can get pretty packed (but packed means extra fun at the bar). In my experience, Sundays and Mondays tend to be the quietest days of the week, but there is really no way of knowing what the crowd will be like until you get there. I find that as long as I'm there by 9:30 or 10:00, I'll have no problem finding a good place to sit.
Karen