It's pretty normal for there to be an interview and waiting list process when going to a treatment facility. Had to do that to get in to the place I've been at for what feels like forever now.
It will be well worth it IT! I think it's common to feel like you have to be "crazy" to get in to these places. It's not true. You'll find that the vast majority of the people who attend these places are just like you. People having a rough time that need the extra support and education. It will be well worth it.
Let us know what's going on and best of luck! I know these processes all too well.