One more point that may be of interest:

At least two of the Grand hotels (Terrace and Veranda) have free wireless internet access in the lobbies. You may be able to get connected in the rooms but I've heard reports that it is hard to do above the 2nd floor. I am not sure if there is access at the Grand (main) hotel, but it probably is since it is the "high end" hotel.

There is no free wireless at Gold Strike, Horseshoe, or Sheraton. If you need dial-up from these hotels, check in advance to ensure that there is a toll-free access number available.