Hotels are filling up. A trick is to call 30 days before you plan to stay. Rooms that have been "blocked" for weddings and such are released at the 30 day mark. Do it first thing in the morning of the 22nd if your still looking.
These hotels are off Kent Island which will require crossing the toll operated Chesapeake bay Bridge. We looked at them as serious options from a price point of view, but the PITA factor of crossing the bridge on a weekend on season, and just the general condition/location of the hotel ruled them out for us. Caveat emptor.