I definately have this one set in our sites for an upcoming investigation. I do know that they don't mind having paranormal groups come in and do an investigation there. TAPS did a show there, but didn't get anything that time. I'm more interested to do it myself and see if we can come up with something cool! We really try to objectify: we're not out to disprove a haunting like TAPS does, but we aren't out trying to prove it either. What we get is what we get, and it seems that so far we've been making some good choices when it comes to cases...
As far as the "facts" behind the Lighthouse Inn, I imagine it is mostly rumor and urban legend, but I am planning on getting our case manager on this one to see if we can investigate there. Unfortunately we already know a little about the site itself, because I like the group to go into an investigation "cold turkey" and do research later, that way if we do experience something, we don't accidentally or subconsciously convert what we've read or researched into what we're actually experiencing.