Lease states:"In the event that any payment required to be paid by Tenant hereunder is not paid within Five (5) days of when due, Tenant shall pay to Landlord, in addition to such payment or other charges due hereunder, a "late fee" in the amount of $50 and $15 a day for each additional day that rent is unpaid.

Ask them not to use it, advise them not to use it, charge an additional deposit for using it, somehow disable it, or get it inspected, install the glass front, and hope for the best???

In addition, where I live the temp drops at night due to proximity with ocean (especially when not humid).  

Many will tell you more about it than you would ever imagine.Getting additional info from the owner is helpful but getting it from the tenants is almost always more enlightening (and truthful).

Years of should I shouldn’t I thought vanished and I felt a huge weight lifted. 

And if you have additional questions from an educational standpoint, I'm happy to answer them.

Of course this would depend on what we could get it for.This auction requires 3% down to bid, and then requiresan additional 7% (so total 10% of final purchase amount) within 10 days of the auction.

This applies if they request an additional spray or the bug guy tells me there is a problem in the unit. 

I would never give up anything up front unless it is for simple moving costs (under $1K post move), if beyond, make an additional agreement that you can attach to retail sale of home.Seller will have to wait for his $ just like you do.$430,000 (ARV)-$310,000 (Balance could be plus or minus several thousand)-$20,000- Holding Costs (insurance, utilities, PITI, etc) about 6 months...

A good broker will FaceTime on site or send video walk throughs and will help shepherd the application process through, in addition to having specific local knowledge.FYI streeteasy started charging brokers to list rental last year and so it's not complete, particularly at lower price points.