I lost my premier host standing because I had to initiate a cancellation and despite having all of the communication in writing VRBO wouldn't credit it.

Escrow companies that are responsive and communicate well.

My realtor is a super communicator which won the bid when ours was basically the same as the other party’s.

You will have to let them know that their buyer will have to sign an assignment because they will send you a Florida Farbar which won't make sense for you.So you have to make sure you communicate with the agent that it will be an assignment of contract.

Eviction is really your only legal option if they are not communicating with you.  

I would love any help that can be given and look forward to meeting and communicating with you!

Sometimes the emotional peace is worth more than the money. 

The Cosigner Agreement states they are financially responsible, all communication will take place through the actual occupants, I don't deal with helicopter parents, they are responsible for payment of rent as well as any cleaning/repairs after termination, etc.Don't forget it's not easy to sue a cosigner if they live in another county.  

As it relates to a vendor, to me the most important thing is communication.

In my opinion, good sponsors communicate regularly (and at a minimum are sending yearly financials and quarterly updates).