This was a decade ago, but we had to relocate 200 miles for work. The conveyancing took so long that we had to move in with relatives for a few weeks so we could start our new jobs and DC (very young at the time) started school. We also only had one car, which we needed to get to school and work as relative's house was not that close to either.
Obviously we had already decluttered very ruthlessly before even putting our house on the market. And also, we had taken a car-load of daily essentials to our relative's house (clothes etc). But otherwise, we basically left the old house completely untouched, everything in place like it was still being lived in.
So the morning before completion on our house sale, I took the train down to old city with an overnight backpack. Let the packers in. They swarmed around the whole house, loft and shed, packing, disassembling furniture, pictures off the walls, curtains down, clothes into hanging boxes, and loading everything like Tetris into their moving lorry.
Except one bed + bedding, kettle + tea + biscuits, and my overnight bag (basically a bunch of stuff labelled with Post-Its saying "Do Not Pack").
I went and sat in a cafe and mooched around the local shops to stay out of their way for those few hours. Then they drove off back to depot with the lorry, I went back to the empty house to spend a slightly weird night.
Next morning they came back, packed the final items, and drove off. I hopped on the train with my little backpack.
TLDR: Worth Every Penny.