Sydney, Australia here but I have a great fondness for Las Vegas, having 'lived' there for a total of 3 months over 4 trips for work a couple of years back, and also visited again late last year (purely for nostalgic reasons - plus my wife likes the outlets) on my way home from the east coast. In my travels I've visited both Gamers' Paradise stores, GameWorks when it was on the strip, and Pinball Hall Of Fame just recently. What a great city for retro gaming - we have nothing like any of that here in Sydney - the largest city in Australia!
If I ever do get the chance to head back for work, and I just might, I'll keep an eye out on this thread to see if my visit coincides with a meet-up. Never been to a retro gaming meet myself; it's hard to talk retro gaming with people whose eyes glaze over when you start talking about games before the PS3!