I agree with what everyone else has been saying, don't give away hunts with the intent of gaining repeat clientele. It's a different story if it's to a charity and you're doing it for the right reasons.

The other thing I would STRONGLY recommend is keeping updated with pictures. There are very few businesses where pictures are more telling of what to expect. When websites fail to update their picture section for a more than a year it looks like they are hiding something. This is for your website, facebook, instagram, etc. You can't have too many pictures.