OK, so you want to see a movie during the convention. No matter which way you buy tickets, Cinemark (company that has the theaters at South Point) has a Facebook page with coupons!
The coupons change weekly, this week the coupon is a FREE medium fountain or regular frozen drink with any size popcorn purchase.
Bookmark this link and get your coupon right before you head out the door for the convention.

https://www.facebook.com/cinemark

See ya there!