Typically, the movie tickets you purchase through PerkSpot are valid for any standard, 2D movie.
Tickets are subject to a surcharge for 3D, IMAX, Dolby, or any other movies with special features. Additionally, the tickets may not be valid for movies taking place at a special event. From time to time, there may also be a location surcharge at select locations.
You may want to contact your local movie theater ahead of time to verify whether or not you will incur any surcharges.