Basically hving different prices based on when you go. Right now single day tickets are tiered into Value, Regular and Peak season pricing. So it costs say $30 more to go on July 4th than say June 25th. But for now multi day tickets cost the same no matter when you go. However this fall they will be implementing the tiered pricing on multi day tickets. It's very likely this is going to result in a large price increase for those who purchase peak season tickets. And probably a not insignificant increase just for regular season.