1.On a Thursday, there shouldnt be much congestion at all.
2.Thursday, you'll not need a Q2Q(personally, unless you're from pretty far away and come on a Saturday, I really see no reason why you would ever need one at Dollywood).
3.Its easy to pack snacks into Dollywood, I always take a few granola bars in my pocket.But im sure if you were to ask, Dollywood would make a exception.
4.I suggest instead of going straight to Mystery Mine, go to the back of the first, and work your well forward.If you time it right, by the time you get to the front lines will be almost non existent.
5.Daredevil Falls, can vary depending on where you sit.Blazing Fury can get you pretty wet if you sit in the front, I suggest the main back for keeping dry, plus there is some surprising air time in the back too. Mountain Sidewinder will pretty much get you soaked every time.Its also, IMO one of the best non coaster rides anywhere.
7.A good majority of food vendors use the giant skillets to cook food.I highly suggest papa's flat bread near the train station.