Caylashley,
My daughter went to WSU her freshman year. We lived in the area (Spokane) for quite a while, so most of her friends from HS went there and most of those went through recruitment. She went through her sophomore year, but transferred to another school. I wrote her recruitment stories (since she went through recruitment at 2 different schools). You can go here to read it
http://www.greekchat.com/gcforums/showthread.php?t=123301 . The first school I talked about (although I didn't mention this in the story) was WSU.
She went through about 4 years ago. I don't think a lot has changed since then about recruitment although some of the make-up and personalities of individual chapters have, so ignore her impressions of the chapters at the time.
As I mentioned in that recruitment story - UW and WSU could be described as competitive but not cutthroat. She hasn't known anyone who had recs going in (she had one), but if you can get them - certainly do (particularly if you are a sophomore). Sophomores do get bids (I realize you are probably a freshman) - but it is a bit tougher. You don't have to have a 4.0 gpa but it should be solid/decent. Stay open-minded. That was the biggest lesson she learned.
Greek life may not be SEC competitive, but it is a BIG deal at WSU and most of the school's social life centers around it. I'm not saying you can't have a great time there outside of greek life (you can), but it is something to consider if you get to day 3, don't have all of the houses you love and start thinking about dropping out.
It is always HOT and at least when she was there - girls wore LOTS of sundresses, shorts and comfortable but cute shoes/flip flops 'cause those hills are killer. If you go to their website, they have pictures of girls in Gamma Rho groups from last year or the year before. That will give you some idea what they are wearing.
They are really LONG days. They have the girls up early - you take a break for lunch, go to about 3 (I think), have a break and then usually have something fun to do with your Gamma Rho group at night until late. It used to go Sunday through Saturday, but they recently decided to run it Monday through Sunday - bids go out on Sunday. There was a good reason for this - but I don't think it worked out quite like they intended (LOL).
Be prepared for the fraternity boys. They stay out on their balconies all week with the sole goal of getting the PNM's to talk or respond to them in any way. You are not supposed to do this.
That's all that comes to mind. CougADPi will be your best source of information. Have fun, good luck, enjoy the football season with the new coach, say "hi" to Butch (we love him), and take a WARM jacket and a great pair of boots (because this isn't the wussy kind of snow they get all freaked out about on the Wet Side).