Mom needs to get her guests and all the belongings out of the property.I know others suggested using illegal tactics to get these people out.

The tactics, strategies, and techniques of investing are the bench press, squats, and deadlifts of working out.

I used the tactics I learned from the book "Never split the difference".

From what I have seen the tactic here would be finding value add opportunities like rehabs, adding a bedroom or ADU etc. to help build equity/increase monthly rent potential.

I just got wind that the town had an emergency meeting and have enacted an ordinance banning all hotels, motels, B&B and STVR's as a tactic to prevent the spread of COVID-19. 

Don't rely on one tactic (i.e., placing a For Rent sign in your yard) to get your place rented.

They know how to fill out the forms, they kow the procedure, the negotiation tactics at court, etc...   

Once you're on your way to your first deal, and if you pursue long term rentals, I would recommend reading "The Book on Managing Rental Properties"  -- great resource for tactical understanding of being a landlord.

Many small restaurants are still pivoting and making it when the effort is put in.Some tenants are sending out force majeure letters.In most cases it is a negotiating tactic with the landlord for short term concessions.Mattress firm as a tenant I would want them gone anyways.

A small percentage of owners are uncomfortable with this scenario, but it's an increasingly common tactic in the industry, even before C19, because it helps get units rented quickly, to well-qualified tenants due to the ability to be nimble, responsive and continue with scheduled showings.What should we expect for rent collection?