I can understand conservative; maybe they want to be perceived as the guy/gal who want to under promise and over deliver. 

Then the Assignment of Sale Contract is delivered to the title company together with the Purchase Contract.I am not sure what Purchase Contract you use, but keep it simple, no more than 2 pages.

You will also know that it is in your best interest to deliver your local version of a 5 day notice to pay or vacate.

Now do you think that means that in most cases, you are directed to an agent within "their network" who is willing to work for half price to show you homes and negotiate the deal are eager to jump and put in extra effort or deliver the best service?

Chances are they would have thrown my offer in the trash if I asked it to be delivered vacant. 

How do I deliver it to them, is it as simple as posting it on their door or hand delivering it to them?

……………Then, if in Washington, have your PM deliver a 20 day no cause notice to vacate.If your place is nice, there are plenty of non-scammer/non-entitled folks who would love to make it there new home. 

Even a RUBS initiative won’t deliver 100% payment from residents and can spark a greater number to move out. 

I'd be very tempted to ask seller to deliver units to me empty.

What about the UPS guy who is delivering school books from amazon?