I am sure the majority of people fill out the surveys at the end of the night and when emailed them too, but I stress this,
FILL THOSE DAMN THINGS OUT.
Even if you bash it to hell, the feedback they get are very important in creating and designing experiences, I don't know how much I can speak about the topic without getting slammed from the big man back home, but when I was taught about guest feedback and reviews when learning about the field they are extremely important.
So as far as IP's go, scream, kick, and yell. If it's possible they can secure the rights, you may receive. This goes with everything in the industry, not just HHN. If it's got demand then there's a good chance.