The credit limit depends on the hotel you stay at. Value is $500, Moderate is $1000 and up from there. When you get close to your limit, you have to go back to the front desk and authorize another $500 (for PC)
Well, the only problem you might have is if you have a Grand Gathering. We were at Pop june 3-14, 3 rooms, all had AP's. We were set up as a Grand Gathering, and when we booked the CM mistakenly set it up for my name only on all 3 rooms, even though each family had received all the paperwork w/proper names. Upon arrival, all 12 room cards had my name only on them and the only way we could charge to the rooms would have been if I had put up a different card for each room, but every card had to have my name on it. We didn't push the issue as there was a long line of people waiting behind us to check in, and it didn't seem that the CM could have changed things quickly or easily. Wasn't a big deal for us to carry our Disney Visa Card