I like the pelican case idea. The pump is waterproof and the tubing is very small diameter so it wouldn't be difficult to set that up.
Heat? Pump is OK, insulin, though, degrades with heat. I use an evaporative crystal cooler which probably wouldn't work with the pelican case. (See Frio for the cooler--terrific product I've used traveling throughout the world.
Good ideas: more!
Be yourself. Everyone else is already taken.