The Village Corner organizes regular tastings and the owners (Dick and Sally Scheer) always bring along a large number of wines to try. It's all very informal in a strolling style. A buffet of hot and cold foods is provided. It's remarkably good values for $35 and gives you the opportunity to find some good value wines that you know you'll like.
No reservations are necessary for this one and you can find further details here: http://villagecorner.com/clubs/aawcnext.html
And as added incentive, July 14 is Bastille Day; what better way to spend your time than drinking wine?