Magic where I'm from is powered by a crystal we have at home. I think the waypoint crystals here are at least somewhat similar enough that I was able to get in but not get immediately transported out.
I honestly don't know. The ones on the dino island all turned off, no one can get through them. If I could do that to this one then maybe at least it'll keep people from stumbling into the hotel through a waypoint until the hotel itself can be dealt with.