Nice report + photos.
Color in your photos is really nice. Camera??
Never been there.
Assateague is one of my favorite places in the world. I loves me a desolate and deserted beach.
I save my AI visits for the 2nd or third week of September. If you're not getting chased off the island by a coastal tropical storm, it's usually golden and the mossies are at a minimum.
Note to any potential summer visitors, bring three cans of 30% DEET bug spray, a box of cheap cigars, and a mosquito headnet. The mosquitos there can be BRUTAL and they are bloodthirsty.
Biggest biting black flies I've ever seen too. These things will remove a chunk of skin.