I'll send you a connection request 

His only request was to check in at midnight.  

Do they get crazy with requests for changes or are they happy as is?

I would say I disagree as the servicer can request information be removed from credit.

I also state that the tenant has the right to request to see the utility bill and I will provide the most recent bills within 1 week in case there are any questions about me overbilling them.

In Chicago you request a CHA Burden sheet and that gross number minus utility allowance will be what you get in addition to making sure bedroom size is adequate.  

Just use common sense.When you get a request that asks if it is available when a quick look at the calendar or the inquiry show it is available then you should be on the look out.

Respond to "unmatched housing requests" as well as other tenant leads.

Quote from @Sami Gren: I start by making the original tenant fill out a form requesting to add a new renter, and they pay me a $50 processing fee (I charge a $50 fee any time I make changes to an existing lease). 

I also know from experience that if you have damages from frozen pipes the insurance co. will try to 1) verify that the property was occupied and 2) verify that the heat was turned on ( for example they could request a copy of the heating bill).