I think you just need to ask them if there is anything they would like to have on hand for breakfast/ snacks. That way you can get the basics in the house and then if there is things they want you (or they) can find time to go get them.
How will the dog react to having someone across the hall to him? A lot of times they will cry longer if they keep hearing people. If that is the case I would find a little kennel and train him to sleep in it (in your room) while they are around.