If you sign up for the Amex Blue keep a couple of things in mind (I have the card and love it - just want anyone considering it to know its rewards!)
There is blueloot and then there are Amex rewards - BlueLoot is free - but no Disney redemptions. Rewards has a I believe $50 charge for it and it does have Disney Rewards.
Once you sign up for blueloot you can change to rewards, but you lose any points you may have already earned. Myself I have over 8000 points I would love to get a couple of breakfasts in Disney - but they can't be transferred - If I were to change without spending them I would lose them.
Just be sure you get signed up for the program that will best benefit you - oh and the items you can redeem blueloot points for are things like basketballs, volleyballs, magazine subscriptions and quite a few other things. If you go to their website I believe you can explore both programs before you sign up for the card even.
