2 cabs or one

Four of us are going to Vegas soon. 3 are staying at the Rio and one at the Flamigo. Are we better off taking seperate cabs? If we take one cab should we "do the tunnel" and go the Rio first and Flamigo second? What would you suggest? Thanks for your help.
Peanie's Mom

suggest 3 take the cab to the rio.

The Flamingo person should take one of the shuttles - about $7.

Grab a sedan by going out any of the higher numbered doors (7 and up). For $50 you'll have the vehicle immediately for an hour, so you can go anyway you want. You'll also have time to stop at CVS if you want to stock up on water, soda, or beer for your stay (a lot cheaper than at the casino).

Larry (limo driver) from Las Vegas