I have it and am not impressed at all by it. The APR on this credit card after the first year is outrageous. If you carry a balance on your credit card from month to month rather than pay it off in full I would not recommend this credit card at all. The interest $ you will pay will most likely far outweigh the point $ you earn to use at WDW.
I got the card when they offered the Little Mermaid design because I absolutely love TLM and had to have it. I already had another credit card I'd been using for years.
The Disney credit card only gives you 1 point for every $100 you spend. If you spend $1000 you will have $10 credit to use at Disney. The other credit card I have gives you a lot more rewards points for spending a lot less $.
I would recommend getting it as a 2nd credit card and charging only to it what you know you will pay off in full. Having it allows you to take advantage of its small perks such as a free character photo at Epcot and although I've never done it I've heard they offer good deals for charging WDW trips.
Another thing I've discovered is that whenever I stop using this card for a while and use only my other card the Disney Visa will suddenly start sending me incentives to use it such as 5 times the bonus points or 25 bonus points for making a purchase. That's when I start using it again temporarily but for the most part I am very disappointed in how small the reward value is vs how high the apr is. If you do decide to get it make sure you search the internet first for a code that will start you off with some freebie bonus points. I'm not sure if it still is but when I got the card a few years ago the freebie was $50.