This item my get you through customs a little quicker, bring or have your own pen to fill out the paperwork. It sucks when you get off the plane and you need to fill out there paperwork and you have to wait for a pen.
If you have a later flight on the day you leave bring a zip lock bag so you can put your wet swim wear in it before you leave for the airport.
We are going to have a roving pharmacy - I refuse to let any ailment slow me down - gas-x, probiotics, imodium, tums, advil/the like, electrolytes, greens-on-the-go, B vitamins in some form, and I'm sure other things that I just can't think of now!