Sounds like a real good pitch that will catch a lot of people's attention and hopefully create a buzz.
Can I make a suggestion? See below:
When you purchase your admission to the Danger Run, you will also get TWO haunted houses FREE with admission! So, you get 3 Halloween events for less than the price of any single local haunt.Not only will receive enjoy the fun of the run and 2 terrifying haunted houses, you will also receive FREE FOOD from DQ!
I think you need to make clear for those who don't know (like me) right away that there is the regular event and then two more in addition to it. I think the word "also" will do it. Just a suggestion.