When I go in the field, I stop at a bank and get one hundred dollars in fives; it goes in a small coupon accordion file in my bag that separates different currencies. At any given time, there's a few hundred in there. I tip with fives, which makes it easy, and they stay crisp and clean in the file.

I seldom use all my perdiem, so a few fives here and there isn't that big a deal; its part of the per diem. and even if it weren't, if I'm getting paid so little I can't tip, then I may be at the wrong job.

I'm not a limo driver.

I've run into a few pilots who say, "nobody ever tips me." That's because you're the god damn pilot, brightspark.

Those guys tipping with one dollar bills need their backsides kicked up around their shoulder blades with steel-toed workboots. Seriously. It's not a strip club.

So far as packing, I've always packed for at least 8-9 days, icnluding what I'm wearing. I roll things tightly in the bag; clean stuff has a rubber band around it, stuff that needs laundered, does not. I carry tide pods and some oxyclean gel for collars. A mandatory day off every seven means enough clothing to get through the next 1/7. Occasionally I'm in countries where it's not possible, and enough laundry gets done in a sink to get to the next machine. On those kind of trips, I've carried some rubber gloves for doing dishes, because the laundry soap eats up skin after a while. Mostly obscure middle east locations or some places in Africa. Otherwise, there's nearly always laundry facilities available anywhere on the planet.

I usually carry four white shirts, sometimes more if I'm going to be very busy.