[fluffychicken]

No proof needed just explain the difficulty you have. The person the DAS is for has there photo taken and they scan everyone band.
To use DAS you go to the ride you want to ride and they will scan your band and give you a return time. You can then return anytime after the that time and enter through the Fast Pass line. You can get another return time after you have used the previous one, so it's best to uses FP as well.