Hi Judy, welcome to the Disney Parks Moms Panel. Your question made me so happy because we absolutely love the Coin Press Machines at Walt Disney World. Before each trip we always save a huge tube of shiny pennies and quarters to be pressed into our favorite characters. My son has the Disney coin collector's book to display all of his pressed coins. Coin collecting is great because not only is it relatively cheap, but you can keep adding to your collection each time you return and each coin will have memories from your trip attached to them.
I always find that I get the most accurate Coin Press information on www.disneyparksmerchandise.com. They have an up to date
Coin Press page that has location information, FAQs, and even a little history on elongated coins. If you click on the link that says, 'Walt Disney World Resort - Coin Press Locations' it will lead you to a nice list of all of the locations as well as detailed maps that point to their exact location. On the list it even has which Dies are on each machine to better help you find exactly which coins you may be searching for.
I hope this helps, and happy pressing!
Have a magical Walt Disney World vacation.