We are coming to the end of ours now.
Try and get out top of your washing before it starts as you don't know how long you will be without (if you don't have utility room).
Set up microwave, toaster, kettle etc in the front room. Get disposable cutlery, plates and cups. Factor in eating out a lot and having things like scrambled egg/beans on toast that can be done in the microwave.
Box everything up early and empty the room. My fitters told me about the woman who left them to it and hadn't emptied a single thing in her kitchen.
We have our fridge freezer in the living room, smaller freezer got defrosted and put in the shed, washing machine stayed in there and they have worked around it.
My children have been told not to go in there and they have stayed away. I would not seal anything off, it may be much easier for them to go in and out the front when they are taking it out.
Be prepared for the amount of mess and dirt everywhere! The downstairs of our entire house is covered in dust. Doesn't help that we have archways and no doors but everything, and I mean everything is covered with a layer of dust, down to all the shoes on the shoe rack in the hallway. If you can get things put away then do. I wish we had known how much dust it creates.