Lots are ready to go, but no construction yet.Sad memories for me, but probably a good idea as the kids are pretty much all gone now...and I'm sure very little use at that pool any more.  

The majority of income comes from Memorial Day thru Labor Day, but I've also been able to find tenants for a 7-month off-season rental the past few Winters.

That way you can get all the info now and if you don't actually purchase a park for a while you can go again to refresh your memory.

It's not because you don't trust each other...it's just to memorialize everything for if something doesn't go right.  

If memory serves me.

Their loyalty, their top of mind awareness of you, and their memory of your contribution to their experience (that they share with everyone they know) will make a far bigger impression on your wallet than a magnet on their fridge with your name on it. 

Most, if my vague memories are accurate, were built on commercially zoned property and actually required to be rented to a business.

I think the question is rather glass half full or glass half empty.A written lease is a legal contract and for what ever the term memorializes the agreement between parties, it benefits both and can be equally important for both.The landlord know's what to expect each month for income and the tenant knows what is expected each month for expenses.Things change and the term reflects what is the risk factor each is willing to accept in signing the term length.Lots of reasons for month to month, 6 month, 12 month or longer are out there it's what works for the particular property landlord and what the tenant is willing to agree on, to get the property rented.

And my MIL's hot water tank broke on Memorial Day weekend while she's away.

It might also help that (if memory serves) your wife is a realtor.