The car rental center is several miles from the terminal and buses to the new terminal 3 are only once every 20-30 minutes. Not convenient at all. People were taking cabs!
This is a very disorganized airport. If you are flying domestic overnight from terminal 1, beware. After 9:30 pm they close the security lines for gates C directing everyone to the further gate D
When choosing your travel outfit, less is more. Avoid wearing clothing, jewelry or other accessories that contain metal when traveling to cut your time barefoot in the security line.
If you're flying United, it doesn't matter how early your flight is. Don't bother getting to the airport before 4am. You will watch the line grow with not a single united rep in sight.