Do you mean that you have to leave a credit card number when booking? I don't think so....don't remember having to leave a number when I booked last year. It's only 1 TS when doing the DDP.
We do this breakfast every single time we are at Disney (one of our favorite character breakfasts). You do have to put a CC down just to reserve your table. You won't get charged immediately like at CRT, but if you don't show up, that is when Disney will charge you. Have a great time....you will love it
We just made our reservation there, and yes we did have to leave a credit card but becasue we are on the DxDP we do not get charged. CRT required payment in advance.