The bars and restaurants are open until 2am. Most retail locations are open until midnight. There is no ticket exchange I'm aware of.
If you dont have the disney magic band and a My Disney Experience log in to link the e-ticket to then you will need to go to the will call or guest services to exchange it for the RF-Card or a magic band. It to the far right of the entrance a cast member should be able to help if you have further questions.
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