The weather in Hawaii is a freezing 70 degrees during the morning hours with a cool tropical breeze flowing from the Windward side of the island. You may need to bring a t-shirt with you and a pair of shorts for those cold November mornings. The day-time however gets to a balmy 85 degrees.
Some freeways have fixed point to point cameras 5km apart so you can't beat them by slowing down for the camera as they will get your average speed between the two points - same deal - 3 km over, fine. Cops will pull you over in their vehicles if they detect you speeding anything over about 4kmh over the speed limit. In Australia speed fining is all about blatant government revenue raising - this despite government propaganda calling them safety cameras.
There is no fool-proof way of drinking and staying under the limit. The amount of alcohol you would need to drink to be considered over the driving limit varies from person to person. Even small amounts of alcohol can affect your ability to drive so the only safe advice is to avoid any alcohol if you are driving.