Out of towner
Can anyone recommend any good BYOBs in Alexandria?
Not true. In fact, in 2011, the Virginia legislature changed that law:
Virginia’s corkage law takes effect on July 1, making it legal for restaurants to allow patrons to bring their own wine. If you were unaware that Virginia banned BYOB at licensed restaurants, you may be forgiven. The law had never really been enforced, as this quote from Richmond.com illustrates:
According to Phillip Bogenberger of the Virginia ABC, “[there have been no] instances where [ABC has] issued citations for violations of the law prohibiting bringing in wine from outside restaurants.”
OpenTable has a list. In Alexandria (you didn't specify where in Alexandria): 219, Cafe Italia (one of the worst restaurants I've ever been to!), LaPorta's, The Light Horse, Savio's. I suspect there are others. I think the only way to know for sure is to call.
Might be best to ask about the kind of food/price/atmosphere you want and then call the few that appeal to you.
Are you looking for a place with no corkage fee - which is easy to find in in Philly? We have no BYOB culture like that here. Best to find a place where you'd like to eat and ask what the policy is.