I got mine with the $200 offer just a couple of months before our recent trip. My wife was skeptical about the free 200 bucks ("they can't be just GIVING you $200..." Um, actually, yes, they did.), but she sure didn't complain when I was paying for meals and souvenirs with those free reward dollars!
As others have noted, other cards offer larger rewards, but we're not disciplined enough to set those rewards aside for something special (like a Disney vacation), and they usually just get applied back to our credit card payment. In a way, the limitation of the Disney Visa rewards (can only be used at WDW or Disney online)
forces us to designate that money for our vacation.
All that said, I probably won't be using the Disney Visa again until I am positive we will be going again. (A sneakier person would use it to
ensure a return trip, but I'm not that sneaky.

)
ETA: Oh, and we didn't use any of the other benefits, like the 0% financing or character greetings. We visited the week after Christmas, and every time we were in Epcot at the right time, the line for the characters was
INSANE.