And I did have to go up $100 from cheapest fridge with ice/water in door at Lowe’s.

How do you power wash indoors. 

Freezing up usually points to a couple issues: 1) dirty filter on the indoor or outdoor unit so it doesn't get the airflow it needs to transfer the heat or 2) low refrigerant.

I am concerned though that if they smoke--they will eventually smoke indoors, especially in the 5 degree winters.

The empty supermarket by us would make a great roller ink or my other idea would be an indoor dog park (TX is HOT in the summer), but the reality is, that I wouldn't necessarily want to run either of those businesses.

Visit the non-profit Indoor Air Quality Association.

Indoor/outdoor rug? 

We pulled those out (all the previous tenants were indoor cigarette smokers so all drywall had to be removed from the entire property).   

I will stay indoors with a cup of cocoa and listen to a BP podcast instead.  

There are two large sheds on the property so storage wouldn't be an issue, just no indoor car parking.