Three years ago, over the Fourth of July, I took my wife and our oldest son to Rochester, MN, as my wife had an appointment at the Mayo Clinic.
Our son has type 1 diabetes. He is on a Medtronic pump, and has been for over ten years. And there is one thing about pump-users: there is a lot of equipment to bring. Even for an overnight trip, like this one was, we still had to bring an extra reservoir full of insulin and 2-3 infusion sets, just in case.
Because you never know when things go wrong. Even if you're not a pump-user, things can still go wrong. Sometimes we over-prepare for trips, and feel stupid for doing so, but when the crap hits the fan we're glad for the extra supplies.
I checked our son's insulin level on the reservoir before leaving. It was half-full, which should've been more than enough for the trip. It wasn't. As we left Rochester Friday, our son said, "Ah, Dad, I only have 3 hours left on the pump."
This was three hours with no bolus activity. Not good. Especially for a 7-8 hours trip.
Needless to say, we're glad we had the extra reservoir of insulin packed.