AA signed every day at Revolver, which was all ages. Anthrax signed at Rockstar every day, which was also all ages. The only person I know of who ONLY signed daily at Jager was Kerry King. He did one signing at Revolver in Saratoga Springs with Corey Taylor and the artist who did the official Mayhem tour poster. I think Motorhead only did one signing the entire tour (not including VIP stuff), which was at Revolver in Indianapolis.
Stop by the Metal Blade tent at Mayhem this summer, dammit