Lots of questions....
what did I feel I could change?.....
well, basically I wanted to see how my control over color correction would change. I didn't feel like I was blowing that many exposures (although my assistants were, and obviously I did blow SOME....), but even though I could correct the color with the RAWs I noticed that depending on the shot, the image quality would be affected, sometimes fairly drastically. With RAW, I don't feel this has been the case. Also, with DPP you just have a few more general controls with RAW that you don't have with the JPEGs. Those are the main reasons...
I did shoot the whole wedding in RAW. The card thing was actually the kind of funny part.... (funny in a non sort of funny way.)

I only used 2 1 gig cards!!

Basically, my assistant sat at the computer the entire day and just kept downloading cards into both of our computers. She would download the RAWs and medium JPEGs on her computer which had a lot more available space and (medium JPEGs for the slideshow and album that we printed) and the medium JPEGs on my computer (which didn't quite have enough space for all the RAWs. )
So unfortunately, we had to be formatting cards the whole wedding, but that's the case for us even with JPEGs. With RAW we just did it much more often. As soon as I finished one card I would give it to her and she would download it and then she would give me the blank one and then 15 mins later we would switch again after I had used the 100 shots I could get off with the 1 GIG card.
It went well, it was just kinda a pain. I'm obviously thinking about getting a slew of 2 GIG cards so I don't have to switch as often and don't have to format at the wedding. That would be ideal.