Great tips! Keep them coming.
I've been doing a combination of all of the above for 10 yrs now.
As for food poisoning, the only cases I've had in 10 yrs were from hotel food and restaurants. It happens! Not much you can do about it but avoid the places that caused it to begin with, however that's a moving target.
As for packing my own food, it is the best way to control what I eat, how much I spend on what I eat and great for my bank account, for the people that don't get it, you'll probably be broke even when your making six figures.
I find that freezing water bottles keeps food cold all day and you can drink when thawed.
Tuna fish, and salmon pouches work great and won't go bad for as long as you need to carry them along (just don't eat that **** in the cockpit)