CONNECTING WITH FREE SHUTTLES
This site is a great source for free shuttles. It is updated regularly. Maps can be printed before you go.
Using the free shuttles with the buses is a great way to travel. For example the Coast shuttle connects the Gold Coast with the Orleans. This means that Flamingo destinations are connected with Tropicana destinations with no need to ride the ACE or Deuce.
The new area is on the free tram going from Bellagio to Monte Carlo. There is another free tram going from Excalibur to Mandaly bay. So, basically if you stay in the Flamingo area, you can access the more southern casinos for free using free trams with just a bit of walking between the two trams.