All the better Las Vegas casino hotels have a charge for internet access these days. Varies from $10-15 a day. Most of the newer places have wired access which is faster of course. Wireless is easier to install at the older places. Some hotels like Riviera offer a commercial wireless service that you can only use with a credit card.

If you have a comped room at a Harrahs owned casino, they usually comp the telephone and internet charges as well. I have always had to pay the daily fee at Bellagio, though.

The hot-spot at the airport is free... you can always drive down and check your email there [g].