The larger property will be required to be held in an LLC.

No idea on the notice period required, depends on your lease and your particular state laws. 

Any insight or knowledge would be appreciated this way:  A mortgage and note do not, in fact CAN NOT legally prohibit the sale of the subject property; nor can that document REQUIRE the announcement of that sale.  

It will require 15-20% down though as others have said.

We find ourselves receiving a combination of PDFs, excel spreadsheets, banking statements etc which then require reconciling and organization on our end.

You can file annual reports as required in each state yourself and pay the fees.

Reflect on what you envision for your retirement and assess whether you're prepared for the effort required to manage properties in a new market.

The City of Branson does require a business license to operate an STR if you self manage.

After all, getting a license requires effort, money, dedication, time, and commitment.

I'd be happy to jump on a call if you like to go over more specific nuances that the Disney area requires.