That rate is applicable for the June 24-July 3 period if you want to precede or extend your stay for a family vacation. It's June 1 for the hotel as well as for convention registration. As for the hotel, it can't guarantee space or the convention rate after that date. So it would be wise to make hotel reservations as well as to register for the convention early. How far is the Wyndham from Baltimore-Washington International Airport.
Free shuttles run from the hotel to the Inner Harbor and some other major restaurants.
You can arrange to rent a car to be picked up at convention's end if you wish to stay in the area and make trips to Washington, Annapolis or the Civil War battlegrounds. Unfortunately, they won't. Very tasty, very spicy sometimes very expensive. Eating them at one of Baltimore's famous crab houses using a mallet and your fingers as the only utensils is an experience. The June Newsletter will have information about where to go for steamed crabs and how to eat them.