Hello,I will not be able to attend a movie I purchased tickets for.Can i still get a refund or can I exchange for another time or movie?

I would call and ask if you can. I think you must cancel the tickets 2 hours before the movie starts. Chances are you aren't getting a refund

Yes, you should be able to do that at the guest services desk at the theater. I'm not sure if it's possible to do it over the phone though.