And since those areas aren't zoned for nightly rentals, then whoopsy, you couldn't operate a legal vacation rental biz there. 

The response rate is low and your conversion rate is about that of any direct mail/telemarketing operation (i.e. dismal).

I feel like the yellow letter type marketing is such a fly by night operation.

For me, who knows very little about how to operate a hammer, the answer is--nothing.

I'm trying to get a wholesaler to show me a legitimate wholesaling operation.

From what I know, if you are managing other property besides your own you must have a RE license and operate under a broker in MN as you are dealing with legal contracts.

Is there anything in these statutes that exempts real estate operators, dealers, investors as to providing any service or product?

I own a property in Boston and wanted to know how landlords hire contractors for snow shovelling to comply with city ordinances.  

While you can still make money (well, you could when properties where cheaper) my expenses ran up to 60% of the operating costs. 

But my ultimate goal is to apply the buy and hold /"BRRRR"(buy,rehab,rent, refinance and repeat.)plan to Achieve my financial freedom .Well, taxes are an expense you take out BEFORE debt service; that is, it's part of the NOI (Net Operating Income) calculation.