They are not all in DL. One machine is at the DLH, in the gift shop. Two (maybe 3) machines are in CA and one machine is in the WOD store in DTD.
When you get to DL go to City Hall and they can give you a list. They can also sell you pennies and quarters so you don't have to bring them with you.
Some of the machines in the arcade on Main St had the list on the sides of the machines, and the CMs in the Trading Post in Frontierland had copies of the list also.