[TrudyM]

Although we haven't moved here yet we have moved a lot and been in this situation. Even if you stay in a hotel you will want a few things for the house while you wait for the delivery of things I mean between 12 and 4 can seem forever if you are sitting in an empty house.
I agree with the folding chairs you will need them for when you go to driveway parties anyway, and the cheap lamp last time I got a work/shop light then used it in the garage later. That way you are not on the floor or in the dark. A good book to read as you wait and snacks.

People who live here will have to address if the utilities will stay on or will suddenly shut off on you a day or so after close.

Bottles of water to give the delivery guys. Every time the movers deliver our stuff they ask for water and they have all the boxes with the glasses in them.

Some of this doesn't apply if you have a pods move.
My suggestions if you have movers unpacking a truck or pod into the house. I have horror stories about movers.
If you are alone get a friend from the forum to come and help stand guard in exchange for you taking them to dinner after. The moving guys need to be watched or they will drop throw and bash stuff.
A cell phone that takes pictures or a camera so you can take a shot of damage on the spot.
A pad of Paper and a clip board, A marker and blue painters tape so you can put up signs next to each doorway identifying which room is which so they put the boxes and furniture in the correct room or they will unload everything into the garage or put guest room furniture in the den etc. I stand in the driveway with the marker and write on each box what room I want it in also have pieces of paper with room ids on them and blue tape to dressers etc. Plastic painters drop cloths to throw over any prize pieces of furniture that you don't want them setting drink cups or boxes on. Don't start unpacking stuff while the movers are there or some of it will end up back on the truck or in the trunk of their cars, I have had them carry my things in the front so they get marked off the list and then out the back and into the trunk of their car. If someone elses stuff is in the front of the truck and they didn't have a dividing wall up, walk in and do a look see and make sure none of your boxes are mixed in on top of their stuff. Make sure they don't load your step ladder back in the truck at the end, had this happen twice, first time they had to ship it back to me later. Now my name and cell number is written on it in big letters. Can't think of anything else for now.