Re: too loud?
I suppose speaker placement with where you're standing would matter the most. The Foos are loud, but definitely not the loudest I've been to. Metallica had me literally covering my ears at times, and I wasn't even remotely close to a speaker there!
2005: St. Paul
2006: Chicago, St. Paul (Dylan)
2008: Minneapolis, Indianapolis
2011: St. Paul
2015: St. Paul, Chicago (Wrigley), Anaheim (9/19)
2017: Chicago (Metro), Madison, Des Moines, Sioux Falls
2018: Milwaukee, St. Paul