It goes past WL as well. Just head out to the back of the resort by the beach (or the geyser). Here is the schedule (and yes it is nightly, unless the winds are too high):
Polynesian Resort -- 9:00pm
Grand Floridian -- 9:15pm
Wilderness Lodge -- 9:35pm
Fort Wilderness -- 9:45pm
Contemporary Resort -- 10:05pm
Magic Kingdom -- 10:20pm (only during extended Magic Kingdom Park hours)