Hi, Who here has used the iPhone 3G in Las Vegas? How is the reception for calls and email and internet using 3G and how much free wifi is around? How is reception in the big Hotels? I understand you can't be obvious with the iPhone in the casinos but how is the reception in rooms, buffets, and etc around Vegas on the strip? How prevelent is wifi? I know that hotels charge up the wazoo for daily internet access. I'll be at the Riviera. One of the reasons I got the iPhone was so I could travel without the laptop and still get email and web access. Thank you in advance.