So in other words you are rewarding bad behavior, and then when they come to us, we have to deal with it.  

In our lease, the tenant is responsible for the first $100-$200 of repairs so that cuts down the calls unless there is a major issue.Had a fridge part go bad on thanksgiving week and it would have taken a week to get it, so ended up buying a new fridge for the tenant, other than that no major issues.The idea of "tenant pays first $100-200 in repairs" is nice until you meet the tenant whose knocked out the display part of a range, which is now hanging loosely inside the top part of the range, and they are sticking their fingers in to turn the oven on and off.

If the tenant is not expecting to see me on their doorstep, they are also not prepared to cover-up their rule breaking behavior.

To give her money, would be a reward for bad behavior.

So if it were me, I would give the tenants the benefit of the doubt.I am a car salesman by trade and student of human behavior and it sounds like these tenants have the same problem that many children do when they are not met with firm boundaries: They are doing whatever they want.As the new owner, you have the fantastic opportunity to lay down the law in a way that the current owner (who sounds like a terrible businessman) really can't (not that he would anyway).Just like a new babysitter has an opportunity to lay down the ground rules with kids who were previously unruly, you can sit down with each tenant with a properly drafted lease and have a very serious discussion.

It is vital that you set the tone that this kind of behavior is not going to be tolerated, you're not their friend or mother.

Because of the behavior of the occupants you believe that this could reoccur. 

He left the marker in question in place, set a new marker in the correct location, and noted on the survey that two markers now exist, one accurate and one that displays evidence of tampering.

It has been 6days of this behavior.

Purchase bad deals and display them on social media claiming they are millionaires.