Being something of an amateur lawyer (I'm applying to law schools presently) I'd like to clarify a few points in your post. I realize that this doesn't help your side of things however I play an excellent devil's advocate.
In regards to #3 and specifically bullet 1, churches, high schools, and community centers are all likely to be exempt under the same list of exemptions that you noted in #4.
Regarding bullet 2, I suspect that a multi-age range dance would not be "illegal" so much as not covered by this section of law. If your parties are open to both teens and adults then I would suggest that you are not an "adult dance hall" and therefore this law should not apply to you and that this would be a reasonable legal defense. However, there may be other sections of law which do apply to you and further research would definitely be necessary. Also, Article IX Division 2 should be read in full as it is referenced more than once within the sections you linked.
Regarding bullet 3, freedoms can be voluntarily voided at any time. By defining yourselves as an "Adult Dance Hall" you voluntarily void that freedom. Welcome to the "Miranda's" of this particular law.
Regarding bullet 4, I would suggest that no night club serving alcohol would refer to themselves as an "Adult Dance Hall" specifically because they are not operating a "dance" nor is their age range 18+, likely it is 21+ which is more restrictive than the definition for "adult dance hall". Theoretically if this is the legal argument used you could avoid the law by having an age requirement of 19+ although I wouldn't use this argument personally.
Regarding bullet 5, have you ever tried to build a house? Talk about onerous.
Now, for the important disclaimer. This is not in any way legal advice nor should it be taken as such. I am not legally qualified to practice law nor provide legal advice in any capacity and highly recommend that you, or more specifically CoLab consult a qualified legal professional on the matter.
Just to clarify...
In regards to #3 and specifically bullet 1, churches, high schools, and community centers are all likely to be exempt under the same list of exemptions that you noted in #4.
Regarding bullet 2, I suspect that a multi-age range dance would not be "illegal" so much as not covered by this section of law. If your parties are open to both teens and adults then I would suggest that you are not an "adult dance hall" and therefore this law should not apply to you and that this would be a reasonable legal defense. However, there may be other sections of law which do apply to you and further research would definitely be necessary. Also, Article IX Division 2 should be read in full as it is referenced more than once within the sections you linked.
Regarding bullet 3, freedoms can be voluntarily voided at any time. By defining yourselves as an "Adult Dance Hall" you voluntarily void that freedom. Welcome to the "Miranda's" of this particular law.
Regarding bullet 4, I would suggest that no night club serving alcohol would refer to themselves as an "Adult Dance Hall" specifically because they are not operating a "dance" nor is their age range 18+, likely it is 21+ which is more restrictive than the definition for "adult dance hall". Theoretically if this is the legal argument used you could avoid the law by having an age requirement of 19+ although I wouldn't use this argument personally.
Regarding bullet 5, have you ever tried to build a house? Talk about onerous.
Now, for the important disclaimer. This is not in any way legal advice nor should it be taken as such. I am not legally qualified to practice law nor provide legal advice in any capacity and highly recommend that you, or more specifically CoLab consult a qualified legal professional on the matter.
Peter