Here's my update!
I didn't get into the taped performances, but I did get to see the dress rehearsal. For those in the L.A. area, if you don't have tickets but want to try and get in, there is a stand-by line. There are tons of people though, so get there early if you want a shot at getting in. There are alot of people who have tickets and don't show up, so they do take people from the line to fill the seats. I didn't get any pictures because you weren't allowed to bring cell phones or cameras into the studio.
We saw everything during the rehearsal that is seen during the taped show, minus the judges. Ryan Seacrest was also there and is very friendly. He was interacting a lot with the audience. He looks so short in person! There is also a lot of sound checking and adjustment with the lighting going on. Katherine had to sing her song twice because of some sound issues. She sounded more strained on the second take, and that is what you saw during the song recaps they do at the end of the show. I think she sounded better when I watched it on t.v. then during rehearsal. Ace also sounded better in person. He looked like he tried so hard up there on that stage, and seemed pretty confident. Really, the band drowns so many of the singers out. Taylor was just so much fun to see in person! Talk about entertaining! You just couldn't sit in your seat - and he did nail the microphone kick in rehearsal! That guy is made for the stage and for singing. Another one that I felt was too drowned out by the band. Then there's Bucky -

! He looked so hot yesterday - in a cute/bad boy kind of way! He loves his fans and likes to interact with the audience, but you don't see that during the show. I can tell you that there were a LOT of Bucky fans in the audience! I also think he sounds better in person than on tv. And yes you could understand EVERY word he was singing! Chris sounded awesome, but the lights were very distracting and made it hard to actually watch him on stage. I think they toned it down a bit for the show, but even watching on tv it was obnoxious. He sings very loud and though my dh like his performance alot, I thought it sounded like he was yelling too much into the microphone. I kept looking at Chris, going "ouch"! Loved the heavy eyeliner though. He is super hot, that's all I got to say! He also had a lot of fans in the audience! Kellie looked very scary on stage. The whole thing was very odd, but I think she sounded better on tv than she did during the rehearsal. She also came across very confident and not nearly as ditzy as she seems on tv. She didn't have as many fans in the audience as you would think, seeing how popular she is. Paris sounded awesome. Her voice really rose above the bands, and so did Elliott. It didn't really come across that way on tv though. Her whole look was just wrong in every way though! She seemed a little stiff on stage. It was a fun time, but I didn't get to meet any of the performers. They gave autographs and signed shirts here and there, but there were so many people that I didn't even try. Maybe next time!