Take a look at your laptop's power adapter. If it's like mine it's rated for 100 to 240 VAC. If you see the lights explode in the room your laptop adapter will likely still work as the AC moved to 240 VAC for some odd reason.
We have a laptop that we, well usually I, take around & set up for presentations & such. This means that a typical Surge protector with even only 4 outlets would be fine. There have been many times that I'm having to haul an extension cord too which I would rather not do. I really would like it to be something like 25 feet. What is the longest that you have came across?