The alpine lakes is actually the 460 and 249 GMU I believe. 250 is swakane. Pretty sure there is an archery season in both those GMU's the entire month of September. I have done some hiking in the ALW. There were a lot of hikers which is to be expected. Talked to some guys that hunted it for the high hunt and it sounded pretty crowded. But most of the high hunt areas are now days. There is also an OTC elk hunt in there for the east side so that adds a few more hunters in there during September.
It's a beautiful area to hike in, with tons of lakes to fish. Not a ton of game but there are some deer, bear, elk, and lions in there.
Regards, Branden