I didn't see this posted anywhere else... This is just something for people to keep in mind when traveling to Disney. It almost caused me a lot of aggrevation... On the last day of my trip we accidentally locked the keys in the room. I went to the concierge desk and new keys were printed. She said she had to print out all three again, but she never told me why. I've traveled a lot and whenever I've locked my key in the room I've been issued a one-time-use key to get me back into the room. I assumed this was the case here and I never questioned it. I discarded the one-time-use keys after we got back into the room. We checked out of the room a few minutes later and headed to the food court for breakfast before catching a bus to the park. We hadn't eaten breakfast the entire trip, but we had leftover CS credits that needed to be used that day. When I handed the cashier the card to "pay" for the breakfasts it showed up as invalid. She called the front desk and they said that the card was no longer active. Apparently if you get a replacement key for the room, the original one no longer works FOR ANYTHING. I went to the front desk and had three new cards printed, which worked fine. It was just plain luck that we happened to try to use the card at the hotel food court that morning. If we went straight to the park that morning like we did every other day, we would have been stuck at the park entrance with invalid park passes and invalid DDP credits. I hope posting this helps somebody out there, because I know it could have caused me a LOT of aggrevation/frustration if I left for the park before I knew my cards were invalid.