Read the boxes on the back of the credit card offer. That is what you should pay the most attention to. You can almost ignore so-called 'introductory rates' as an incentive. With any credit card, the company can change their policies at any time -so if you get in debt, that introductory zero percent can diappear in a heartbeat. Beware of credit cards that cycle twice a month. Look for the lowest APR, but only permanent APR's - again, look at what is in the box on the back of the offer, not the ad lines on the front of the offer. Aslo note how long the cycles are, and what kind of fees they charge.
The Disney card is not that great of a credit card...they do really bad things if you pay late.
At the risk of saying the obvious....The other important thing about credit cards is to pay them off completely every month! NEVER charge more than you can pay, and keep enough cash in reserve to pay next month's bill too - in case you lose your job or something. If you can do that then CC's are helpful, but if not, then they quickly become a nightmare!
Again, cach back is useless if you don't pay in full each month. whatever the offer, the company is banking on the idea that you won't pay in full each month.