The Disney VISA is a great card to have. The 6 months 0% vacation is a great perk, and there are some good discounts on WDW resorts.
But I think the Disney Points system is a little weak compared to other cards. Basically you have to spend $10000 to get $100 Disney Dollars. A lot of other credit cards give you double and triple points for certain purchaes (gas, drug stores, etc). I have written to Disney Visa and told them they really should give at least double points for any Disney related purchase. They do periodically run a promotion if you spend $450 a month on certain items (gas, drug stores, home improvement), then you would get double points on those purchases. But it is still somewhat lame compared to other credit card rewards programs.