The least you can do is be boxed up and ready to go. ESPECIALLY if you have able bodied family members. If they're lounging around, I'll call them on it and split. If the the quorums are going to be called on to help, then it's up to the HTer to make sure they're ready to go. Not his responsibility to get them ready, but his responsibility to tell the rest of the quorum whether or not they are ready.

Obviously there are exceptions, I helped a mentally handicapped member of our HP group move and didn't mind boxing things up and doing whatever was needed to assist him.