Another "Day One" cardmember here!
I am very good about paying off the card on a weekly basis using their online account management
www.bankone.com/disney
You can also download transaction data directly into Quicken (if you use it!)
I like the rewards - $1 for every $100 you spend. (I know AMEX or an ING Gold Savings account do better, but I like the look on cashiers' faces when they see the Disney card.) So far, we've earned about $600 in Disney money and have yet to pay any interest fees since we pay it off constantly.
We're hoping for Disney Visa discounts this November (since we're not AP holders this year.)
If you are diligent and not going to let it accrue interest, it's a good deal.