The Employee Network

Depending on your employer you may qualify to use the services of Employee Network. My company is on their list, so we can take advantage of the discounted theme park tickets and other stuff. Mostly we do the tickets. This visit we purchased Six Flags and Hurricane Harbor tickets at a significant discount. They are live tickets, too, so you go straight to the gate (instead of going to a ticket booth to redeem a voucher). The discounts were significant, and we saved a good amount of money.
They also have tickets for Legoland, Seaworld, and other stuff. Plus some discounts for local activities.
Definitely worth checking their website to see if they have discounts that will help you for your next activity or vacation.