The campfire sing along starts at 7 until the time change (from daylight savings)
Chip and Dale will appear during the sing along and then greet all the guests by working their way through the crowd. Be sure and bring your camera and some choco chip cookies (their favorites

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at 7:40 the movie starts, the schedule is listed here on the camping forum.
The theater has benches and bleachers and is about the size of the infield of a baseball diamond. The benches are a little more comfortable because they have backs, bring a cushion or a blanket because they arent padded.
You can bring your own snacks and bevvies or purchase them at the chuckwagon.
Friday and Saturday nights have a double feature
If you arent real familiar with Fort Wilderness dont worry about finding the campfire. It is in the "meadows" recreation area. If you come over by boat it is an easy 10 min walk, if your feet are worn out ( a very common thing at WDW) you could catch a bus. Walk past pioneer hall after getting off the boat (it will be the buildings on your right) the bus stop is just past that. Take an internal bus ( I think its the orange and yellow that go by the meadows) and tell the driver where you are going, they will gladly get you where you are going.
When the movie is over reverse the process.
if you have any other questions please feel free to post them.
If you go please say "howdy" to Ms Sundee and Ms Julie and tell them their friends on the Dis are thinking about them
Scott