So, a fist hole in drywall would be damage, but a chair rubbing against a wall and leaving a mark would be normal wear and tear.

However, there is one sticky point that may give you a legal leg to stand upon, and that is the collection of the deposit.   

Forgot to mention that the distinction between meters costing thousands of dollars vs. about a hundred may be whether or not the meters are installed by the utility... where I'm based the public utilities charge an arm and a leg for meter installation, but we are installing our own cold water submeters (upstream of the utility meter) in each unit for somewhere around $200 each I believe (don't have the numbers in front of me), which includes the cost of the wireless transmitters, repeaters, and receiver.

He said that the PM did not come for the rent before the 5th, so he left for a vacation and when he was back his car was on fire and he needed the money for new car since he has major leg problems.

Does she have a leg to stand on here?

In regards to renters, they actually had metal leg bar stools in one area.

There was multiple chairs around in the bedroom and it leads me to believe an all night binger was going on.

You would have no leg to stand on if you had any tenant problems. 

(b) A provision of a lease that purports to waive a right or to exempt a landlord from a liability or duty under this section is void.Added by Acts 1997, 75th Leg., ch. 1205, Sec. 8, eff.

I have been to court to evict before and I know my lease and my rights and know that I am right on this one, and he doesn't have a leg to stand on, I was just curious about doing the walk thru, but I think it may be best to wait until he is gone.