I'm on the Delaware River all right, only at the mouth; Lewes, DE
We're more interested in the sailing aspects of a venue as opposed to the "amenities".
The lower bay wind and waves, can and often does change abruptly which sometimes makes for a white knuckle ride. Slip fees in Lewes rival that of Annapolis because of supply and demand, so we have been moored up the Broadkill river for 50 bucks a year. It's 10 minutes from my house and one hour to the bay.
This year we are looking at several marinas on the Wicomoco and Pokomoke rivers, for the purpose of doing some serious gunk holing in 2012. Amenities be damned, but like minded sailors are graciously welcome to out best efforts at hospitality.