You can definitely use it on the Citywalk restaurants. I'll trust schumigirl on the carts. One small issue that we ran into was that on our last we gave our luggage to bell services and then played in the park until we had to leave for our late flight. About 11am (checkout time?) our room keys stopped working for purchases. Not a big deal, as we thought that might happen, and, of course, we had kept our wallets with us instead of at bell services. But just something to be cognizant of.