I just got one on my Jan. trip - you sign for it on check-in. I used mine to upgrade my pass to an AP, and to buy souvenirs at different gift shops. I know you can use it for dining, not sure if just towards a tip, but I'm sure it can cover your tip if added to your dining bill. It gives you a detailed page of what it's allowances are when you get it, can't find mine to help you ahead of time. Enjoy!