You always have to worry about waking up to a cold smoker until you get to know your smoker and your fuel. Anymore, I don't even use the wireless remote thermometer. I just get it going and once it settles in, I know I can get some shut eye (not much but some). At the very least, no matter the fuel, you need to fill and pack the ring for the maximum time without refueling. Generally people can get 12+ hours on a full ring so with a full ring and getting some sleep early on in the cook, you shouldn't have to worry about refueling.