Can I buy a sim card for my gsm phone in vegas, or do I need to buy one of those pay as you go US phones? I would like to have a local number while I'm at pubcon, so the solution in most of the world is to just buy a local sim card and pop it in the gsm phone.
If this is not the case, do the airports sell these types of pay as you go phones, or do I need to get off the strip on Vegas to buy one?