This is the 21 century...the electronic age. Any ship built in the last ten years should have a beefed up electrical system in the cabins to accommodate today's demand. I'm not an electrical engineer or a marine architect but common sense would dictate an upgraded electrical system.
Years ago on the Destiny I did notice power surges on my deck. We never lost power but there was a problem.
Let's count the power demands of a typical cabin: computer, cell phone, camera, hair dryer, hair curler, night lights, CD/radio, CPAP, clock, electric razor. And don't forget the calculator to figure out your sign & sail bill.
Now that I have unloaded my power strip/extension cord I have more room for rumrunners!