DC fills up fast, its very popular.
I a sure there are some spots at FCF that will get a sat signal, but I've never looked for that particular things so I'm no help there. We prefer the B loop as most of the sites are full hookup.
Here is about the best overhead shot you can get of the campground. The part highlighted is a part of the B loop where you might be able to get a sat signal
Edit: sorry for large picture, forgot to set the width.
KK4PFX
2015 Chevy 3500HD LTZ Dually
2013 Sandpiper 365SAQ