Hyannis bars good for welcoming party?

I am getting married in early June and our guests are staying in Hyannis.  We would like to host a welcoming party for our guests on the Friday night before the wedding.  It'd be probably 50 people and we are thinking of hosting beer/wine only (no food) for a few hours.  Any ideas of bars/restaurants that would be suitable for this?  Ideally it would have a large bar space, not too loud, not too crowded (though I realize this could be difficult on a Friday night in June).

Thanks!