You'd be competing with more private accommodations and resorts with indoor water parks. 

After that idea was shot down I started thinking about putting a metal building on the land and renting a few larger indoor rv spaces.

I have a different rental with bathrooms on all bedroom levels and I get much more per bedroom in rent for it.These bathrooms where put in when indoor plumbing was considered a technological innovation, so they might have under estimated how often and how long people spend in them.

Oh sure, indoor plumbing and electrical and all, but most REI's aren't wanting to become plumbers or electricians, or they'd go to trade school. 

I spent 7k for an outdoor unit and two indoor units but the cooling in my market is very valuable to renters. 

ICE generally does not kick in doors, if someone will open them:)  But you should find out what you can about a potential tenant.Also, just FYI, sometimes people do not want to put someone on the lease because of their background, or because they are hiding from law enforcement or ICE or because they are subrenting your house. 

Ask if they currently have the cash for security deposit and first month's rent.Ask why they're moving and when they plan to move.Ask if they are indoor smokers, outdoor smokers, or nonsmokers.Ask if they have pets.Ask if they have ever been evicted or late on rent.Ask if they've ever taken a landlord to court.Ask if they've ever had trouble with bedbugs.Lots of these questions can be on an application really.The following isn't exactly what to ask them, but good tips seeing this is your first rental:Typically, the longer their story to you, you'll find the more they're hiding.If a couple breaks up or roommates fight, don't let them make it your problem.

The house has a main structure about 800 sqft (2b1b), a separate storage space 600 sqft (potentially converted to livable space in the future), two-car port and an old barn space (a potential indoor rec space).

Other options include doggie boots with Velcro straps to protect Fido's feet, and making cats indoor pets.Cans and garbage can pose a danger when cats or smaller dogs attempt to lick food from a disposed can, sometimes getting their head caught inside the can.

If you vent indoors, where does it go?