Like many people, I am going to have to put my WDW trip expenses on a credit card (Resort, Tickets, hotels/restaraunts on the way and gasoline). I am thinking about using my Discover Card since it has a zero balance. That way I can easily keep track of my vacation expense. Master Card and Visa are accepted almost anywhere, but how about Discover? Should I be okay to use it? or do some places not accept it? Does anyone else use Discover? If so, have you encountered any problems?