I believe this is the 3rd year for the Alexandria Seaport Foundation's Wine on the Water. It's a fun event that supports a great program. You can't beat spending a late spring evening along the Potomac with a glass of wine. From their e-invite:
Full disclosure, a good friend of mine is on their Board, but I would support the organization and recommend the event, even if that wasn't the case. Hope to see some of you there!