But I would be somewhat concerned about satisfying a “hostile” element in an adverse possession claim given OP admittedly was unaware of the interest until recently.

I actually allow my owners to have as much interaction with guests as they want.

You can always tell a lot via body language and face to face interactions you won't get from emails or phone calls or Google searches.  

A contract is legally binding when it has the following elements:1.Consideration - An exchange of value between the parties.

I like the interaction of in-person.

Except for interactive Q&A and possibly accountability groups, there is nothing lost in the recordings.I think each was worth the price and time.I took a commercial (>4 units) MF boot camp.  

During a social encounter, I unknowingly interacted with an individual who misrepresented their age.

Assessing financial objectives, property costs, rental earnings, tenant interactions, and market patterns is key to making well-informed choices.Good luck!

The best I can find is the interactive zoning map for the particular county I am looking into. 

Not easy to answer.In our opinion, the most important element in determining a Property Class is the target tenant pool.Just think about it... what do you think will happen to a Class A property is you rent it to a Class D tenant?