I spent probably 3 or 4 hours trying to slog my way through MDE before our trip. I encountered the most bizarre problems I could have imagined...from no option to choose my children's ages to phantom fast passes showing up all the way through one day's worth of fast passes DISAPPEARING from my account.
And, God help me, I was foolish enough to try to get FPs to Be Our Guest for lunch. This was the single most frustrating thing I have ever tried to do in my dozen or so trips to the World. Two phone calls to customer service and I still couldn't get an answer about why my confirmation number GIVEN TO ME BY DISNEY WORLD was not working. I finally found the answer on a message board. Apparently, there is a hidden confirmation number JUST for the magic bands that is different than the number you get for your package and you have to use that number to link your lunch FP to your account.
Pardon me, but WHAT THE H#%?? Why in name of all that's good and right in the world would they make a system so difficult and counter-intuitive?
This roll-out was both foolish and clumsy. I'm all for better technology....but as of right now, there is nothing "better" about this, because the bad seems to HEAVILY outweigh the good.