What would you hook up? A few portable lights? A fan heater? What would they use to cook with? You could rig up a temp board but the mum with a family to feed still wouldn't be that impressed with a few meagre sockets.... As with your situation, the domestic spark would still have to see it through, get back and fix it come hell or high water. And as I said previously, no fix often means no pay. I bet there's loads on here with stories similar to this example.
Its a rare thing but I'm kinda with E54 on this one. I do nearly all domestic, and I've had a few family in the dark with no dinner at 6PM moments but I can't imagine it being comparible to the pressure of costing someone a grand in lost earnings for every minute it takes you to find a fault. I have a mate who does industrial, electrical mechanical and software maintenance. He came out on the lash with us the other day and proudly informed us when we got in the pub that he was supposed to be on call. Long story short he got called to a meeting a few days later with some very big scary UK managers and told he personally had cost the client 150k in lost earnings. My first thought was "thank god I do domestic"
By comparison my phone rang on Xmas day and the lady said, "Hi Dave, my 50 grand new kitchen that you wired up has lost all its power, and its christmas day" "Try turning off yer underfloor heating isolator and reset your RCD" I sais. Bingo, problem solved temporarily. I didn't go back to fix it (which took 5 mins) for a week and the lady was still over the moon that I'd answered the phone on Xmas day and had bought me a bottle of wine.