We just got back from an AS weekend and made new friends with the owners of two other airstreams that were there. Actually, one was an Argosy, (paint stripped and polished) but we feel like they're part of the AS family. We hope our paths will cross again.
This was our first time to this park and it is superb. 3 camping areas, two with W&E and one for tenters. Nice sites, clean bath houses, HUGE pool, fishing in the Potomac River, Kayak and boat rentals, nicely stocked camp store, interpretive events put on by the park staff.
We'll go back.