Las Vegas Hotel information:

If you book a Caesar's hotel (Caesar's, Rio, Paris, Bally's, The Cromwell, The Flamingo, Harrah's, Planet Hollywood, or Nobu) through the hotel itself, mention the Rice-Faries wedding to save 10%.

We recommend checking other websites for cheaper prices:

Hotels.com

Vegas.com

Taxis are readily available to get you to and from the airport/hotels.  Rental cars are not necessary unless there are other things you wish to see/do while in Las Vegas.