Pays on time?

Yes, the government pays the Section 8 rent timely, but more and more tenants are having to pay a portion of their rent.

I would keep the deposit unless I am able to rebook the dates and then I would only make her pay the difference for any unbooked nights. 

If land values are increasing significantly, you can back-end load the seller financing for a percentage of the profit when you sell.To add to prior comment, how many septic tanks do you have?

There is usually extra charges on closing to pay for that service… but it is minimal.All the best!

By all means give them a note on how to use all of the appliances (eg clean out the lint trap on the drier after each load, do not use dish soap in a dishwasher, change the furnace filter regularly, etc).

If you enter a neighborhood and you immediately lock all doors from the inside, and check to make sure your gun is loaded, you are in class D no doubt.On the other hand, most class A+ neighborhoods as you drive through you cannot see the houses from the street. 

Adding mass to the walls works wonders—attach Mass Loaded Vinyl (MLV) to the shared wall, then cover it with a layer of 5/8” drywall using Green Glue soundproofing compound for extra noise-blocking power.

Quote from @Leeling Chew: It doesn't matter who pays the bills.

Pay to separately meter the utility.