I use TC's, Disney $$, and CC. I always back up my room key with a CC because if I want or need something I can get it. I take DD's because many people know we frequent Disney and give them to us as gifts, and I use this for all of the kids spending money. TC's are in case I need to have more cash or run out of DD's. Once our town car never came to pick us up and we had to take a cab to get back to the airport--without the TC's we would not have been able to pay the cab driver! TC's are easier to convert/use when we get back home than DD's as well. Breakdown-CC nearly all food/souvies (connections vouchers usually cut down on how much we spend on food since it is "pre-paid"
DD 100% of the kids spending money and about 25% of ours
TC- what I would have brought in cash-usually about $200 for every 7 days of the vacation.