I walk into the house with my binder of all my needed contracts and if we come to an agreement I fill out the contract right then and there.

If the tenants are on a month-to-month agreement, then you have to give them a 30-day notice.

In response to your question (1) hopefully a contract (if you're an investor) or (2) if you are or have an agent, a listing agreement.

They are independently owned and operated under an agreement with the Franchisor.  

Maybe you can convince everyone involved to convert to a community owned system, with a shared maintenance agreement, reserve funds,Just need to find the smoothest path forward to needed upgrades like an above ground cistern, pumps, backup generator, better filters, or whatever to make the system function 100% of the time$1500 is minimal, spend it if that's the way forward.

Our agreement has typically been structured as an interest only loan, where he puts down 25%+ when purchased and I provide the loan for the balance plus draw payments for construction.

The rental agreements between the owner and the renter must mandate language by the city.Lastly, the owner or agent must be available by telephone twenty-four (24) hours a day, seven (7) days a week, to respond to police, fire, or other emergency personnel requests.City of Bradenton BeachThe City of Bradenton Beach allows short-term residential or vacation rentals, but the owner must obtain a permit or license from the Division of Hotels and Restaurants of the Department of Business and Professional Regulation, which is very similar to the Anna Maria requirements for the application of license as set forth above.

I am wondering if someone would be able to provide me with a land purchase agreement.

If you are doing management and tenant placement yourself then you should have a lawyer prepare a Lease Agreement (i.e., "tenant contract") for you.

Assuming you can legally represent your neighbor, you will need to have some sort of written agreement.