For $26.95 you get to spend 6 hours in the park (on nights it is open until 11) during the summer. That is half price.
Plus summer nights are the best at Hershey - cooler, less crowded (usually) and the lights are great.
The Boardwalk is open these nights until 8 so if you come in at 5 you can spend 3 hours in the water and three hours doing rides.
Not a bad deal for someone who doesn't have a season pass.
Walt Disney World's Magic Kingdom
Disney's Animal Kingdom
Disney's Hollywood Studios
Disney California Adventure
Universal's Islands of Adventure
Universal Studios Florida
Universal Studios Hollywood