Trail's End is indoor. It is right next door to the Hoop Dee Do. You can use Disney transportation. Take a bus to the main bus depot at Fort Wilderness Campgrounds. Then take an internal bus throughout the campground to the Hoop Dee Do Review. You can look at the bus signs to find out which color bus you want to take. Otherwise, ask the bus drivers.
Here's the most complete list I can find -- all the buffets or family style service, location, meal theme and/or entertainment, prices may be outdated (August 2006 was the last update, and it still lists Donald's breakfast in AK at Dinoland instead of the new Tusker House location, doesn't list Tusker House as a buffet at all):
GO to the dining section of this site and search the menus under Dinner and Buffet..yes. It will bring up a list of ALL dinner buffets and show you the menu items that are offered!