Welcome to the Board. The first week in October Douglas lake will probably be down from full pool by about 20ft. It is down 15ft now and with this hot dry weather TVA is drawing down all the East TN lakes for hydroelectric generation as well as the normal Fall/Winter water release. Here is a chart of the lake level as of today, the red line is this years fluctuation to date.
As far as camping, the TVA campground at the Dam has full hookups, tent areas, restrooms and a nice boat ramp. There is no docking area to leave your boat overnight, the water will fall another 20ft so all public ramps are just launch areas only. There are a couple campgrounds scattered up the lake, most have permanent sites only. Anchor Down RV resort has nice spots for large campers with all pull through concrete pads but vey few trees or grass. It has a steep ramp. There are lots of Rental cabins/ Houses available up and down the lake and on both sides of the lake, most have docks but if they are not cabled correctly and let out each day with the falling waters they are pretty much high and dry by now. I would plan on staying anywhere below I-40 bridge, Dandridge and Muddy Creek areas are two places to start looking. The Point Resort area in Dandridge has rental rooms, a boat ramp, and a nice restaurant that looks out over the water. It is centrally located on the lake. As far as fishing goes, pulling cranks and long lining jigs in the main channel and in the big creek mouths will be your best bet. The water temperatures are still hot right now, 85 and above and there is not much relief in site.