Gee willickers! I had not realized that shelters evoked such fevered debate amongst my fellow hikers.
I guess I just must have been lucky the past 5 years or so. I've been section hiking N from Springer since Labor Day 04. Most of the hikes were the week after Christmas. I'm up to Sam's Gap in NC and, with the exception of the Smokies shelters being crowded in 06 and a 3 Stooges-esque father/son snore team somewhere in the Nantahalas the year before, I've basically had the shelters to myself. The only mouse I've seen was one of the cute little ATC stuffed ones in someone's pack. I have seen a few trashed shelters but I've seen far more trashed campsites.
Guess I'm in for a rude awakening on my thru-hike next year, huh?
I do have earplugs and also intend to use my Lunar Duo with reckless abandon.