So I recently sold my business and I want to take a little time off. My plan is to travel around the world in about 3 weeks. 18-20 days, starting and ending in Las Vegas with 4-5 different stops. My definites are London, Amsterdam and Tokyo. My maybe list: Interlaken (snowboarding), Kiev, Delhi, Prague, Frankfurt, Nepal, and Sydney. I feel like 3 days should be enough for each. I'd really like to hear opinions on these choices. I plan on bringing the usual assortment of gadgets - especially with such long flights. Macbook, iPhone, Nintendo DS lite, Motorola Slvr with sim cards, digital vid/still camera, an Etrex Legend GPS and, of course, an assortment of chargers and power inverters. Will I be able to make calls using the iPhone in London?