Again as everybody has stated you can use you CC just about everywhere. Even some of the push carts, but certianly not all of them. However...
We did CC last year and it was kind of a scary situation (If you are on a budget that is. If money is no object then ignore this post, but then again if money were no object you probably would not be on this board)
If you use travelers check or even cash(risky) you can easily monitor your spending and the balance remaining of your "vacation" money. We bought a lot in WDW Snacks, Meals, Photos, Souviners etc... and towards the end of each day I would wonder how much I had spent and how much she had spent that day. Some days I was really clueless. I didn't do a good job keeping track (some receipts in my wallet some in her pockets some in mine, then we'd sometimes change clothes half way throught the day... more pockets). And I was nervous that we had spent WAY too much money on our vacation. It was a real downer for my wife at times.(LOVES to spend money!) When we got home and checked the CC balance it turned out then we had spent much less than I had budgeted for vaction. Now granted we had an awsome time, but my wife could have had a little World of Disney shopping spree.
I'm still on the fence for next years vacation. I will either do CC again, but I will carry a small pocket notebook and pen to keep a running tally of our spending. Or I will do Travelers checks with the envelope for each day method.