Just FYI -- I think if I could go back, I would've put the All Star Music into our block (we did All Star Movies instead). It looks like they just refurbished the rooms at the All Star Music and last time we were there, Music had it's own bus whereas Sports and Movies had to share (at least for the bus to MGM). We stayed at Movies a few years ago and it was the opposite -- Movies had it's own bus and Music/Sports had to share.
I do like the decor of Movies though -- with the Dalmation and everything.
However, you might want to take into consideration when you are having your wedding. At certain times of the year (I think mainly January to March or so), high schools have competitions at WDW and the Music/Sports is where a lot of the kids stay. I have heard it can get pretty noisy.