We're still researching the official permissibility of setting up private tents in the Getaway (Camp 4) area, but it may take a few days to get official responses.
The cabins, by the way, are beautiful and rustic. Prince William Forest Park has a website. The cabins you'll see there under "cabin camps" are in Camp 3, but they are similar to the ones we'll inhabit for the weekend. When you're not asleep, if you want to get away from it all, venture in almost any direction in to the woods and you'll be alone. There's a river/creek and a small lake/pond (if the record drought this summer hasn't dried it out) close at hand.
J0_77: I can assure you that there will be real folk singing at the Getaway (and a fair amount of non-real-folk singing). People will sing traditional material and the songs they've written themselves, ethnic ditties in odd languages and the songs of their favorite singer-songwriters. Many of us in the FSGW know unusual material, and many of us also know the provenance of the material we sing. We've got folkies of all stripes, including traditionalist curmudgeons.