The cleaning suggestions are exactly what I would have suggested. When we were trying to sell our house, we had big bins we would shove stuff in and stack them of the back porch.
MM, you have been able to handle a lot lately, so I believe you will get through tomorrow, too. All of the stress will make you physically ill, so just know that you will do the best that you can.
As for the grass, I would just make my apologies and say that you are working on a solution. Here, on the east coast it has rained so much that we have not been able to mow for a while. Could you use an excuse like this one?
I wish I could be there with you to drive and mow-I'm not much of a cleaner, but I would gladly find hiding places. I hate that you have so much to deal with!
Let us know how it all works out.

Bluemountains