Vactation!!

Next week at this time I will be in Arizona. My favorite cousin Brendan and his wife and kids live about an hour from Vegas so I decided to spend Thanksgiving with them for a change. I am flying alone but I am excited! I never have gone anywhere on vacation with my pump before so I couldn't think of a better place to ask for advice then here. I live in MA so Arizona is 3 hrs behind us so I am unsure if I should even change the time on my pump and if in the airport I should take it off going through the medal detector? Any other hints or advice would be greatly appreciated.