Caesars did have fireworks last year, but not on the 4th. They had their display on Saturday, July 7, 2012. A number of local casinos including Red Rock did have displays on the 4th. If you are staying at the Flamingo, you may want to consider going to the observation deck of the Eiffel tower around 9 PM or any of the roof levels of the parking garages on the strip and you will be able to see the outlying displays.
Larry from Las Vegas, NV