Our school is selling gift cards now and they carry the Disney card. In researching the cards, we found that they can be used for just about anything Disney. But today in trying to use them for tickets at the park, I found this little problem. You may only use 2 cards in a purchase when purchasing - no matter the amount - but you can use as many as you want if all is charged to your room and then the check out can apply multiple cards with no problem.
I had this verified by a manager and so I am going with it as we have been given about $1400 in gift cards and they assured me this would be fine.
