Let me rephrase it: All tickets can have days added. You can do it on any ticket before the end of the final day of your hopper. If you bought it from disney.com I believe you can do it at the ticket booth. If you bought a package from AAA, Costco or disney travel I believe you need to go to the travel office. I'm not positive of the locations to do it. When I asked disney travel they were a bit vague. I recomend you call and ask specifically where you should go.