We live in Maryland and when we go to the ocean we always go to Assateague for the beach. Even if you are not camping the beach at Assateague is much easier to access than Ocean City and usually not as crowded. You do have to watch your belongings on the beach at Assateague as the ponies will grab things and go off with them.
It is nice that you got to Fort McHenry and got to help raise the large flag. We have also be able to do that.
I'm glad you enjoyed your time in Maryland. BTW I would not camp in Maryland in the summer without AC either.
