Welcome Maxer. Keep your reviews of other PAC venues coming.
You gotta spill the beans on Wazzou, Zona, the SoCal institutions, and anywhere else in the conference that deserves a review.
Boulder in September is a very good destination for you traveling bears.
Alright I'l give it a shot.
Wazzu: Truly in the middle of nowhere. I think the stadium holds around 35k and is usually full of enthusiastic fans (nothing else to do in Pullman - plus this is the fanbase that has waved WSU flags at every College Gameday since the mid-90's regardless of location) but it's TINY and a hassle to get to. I know some people that have gone to road games here actually stay across the border in Moscow, Idaho (where U of Idaho is) - more going on there.
Arizona: Tuscon is a nice place. Beware of night games here (and at ASU -- more on them later) and the stadium is decent. They put the students in a ring of like 20 rows all the way around the place, which is interesting. Don't sit there. Decent places to eat, pretty good tailgating setup.
ASU: Stadium feels like a pro stadium (used to be one). Chicks are just unbelievable. Decent tailgating. Don't go here at night unless you want to fight drunken idiots. Students are particularly stupid and obnoxious.
USC: Great tailgating setup on campus, then you walk through the campus to the Coliseum. Fans are ok (obnoxious and arrogant, but no one is going to throw a bottle at you), and I think they're starting to lose their casual fans from West Covina now that they aren't the juggernaut they used to be. Coliseum is huge with terrible sightlines though, and the visitor tickets are truly horrendous -- buy tix on Stubhub (as someone else mentioned). Feel free to sit anywhere, USC fans are not a threat.
UCLA: The Rose Bowl is cool, although rarely full for UCLA games recently since the team is bad. Tailgating is on a gigantic park/golf course surrounding the stadium, so space is never a problem but it's hard to meet up with people if you're trying to do that. Usually enough space to spread out in the stadium or move to sit with friends or whatever.
Autzen: LOUD. Alums are usually decent, big contingent of insane meth cooking locals now that they're good. Be wary of them. Great atmosphere though, and Eugene is just big enough to have enough to do for a weekend.
Corvalis: Recently remodeled and surprisingly nice stadium (Reser). Nice fans generally. Gets compared to Wazzu a lot but is a lot easier to get to. Small town but I enjoyed coming here a lot. Really devoted, friendly fans. You can cruise around the tailgates and people will offer you stuff and ask about your team.
Stanford: Brand new stadium. They downsized from approx 72k seats to 50k and still never fill it, even last year when they were a Top 5 BCS team. Lots of space to tailgate. Recommend staying in San Francisco and either renting a bus (if you have a big group) or taking CalTrain down for the game. Somnolent atmosphere in the actual stadium, unless there are enough visiting fans to liven it up.
Cal: I'm obviously biased, but I think it's a pretty good experience. I'm sure some of you guys where there last year. Tailgating is not traditional (since there's no space). It's more about going to bars which have gameday stuff going on. Henry's is usually the best, Lair of the Bear on campus if you can get in, there's some stuff on Telegraph Ave. as well. The stadium is being significantly remodeled so next year home games are going to be at AT&T Park in San Francisco.
Utah: Never been -- you guys have any insight?