The other item I've learned over time is to put extra diligence into really understanding the cause of any flat. I was bitten once or twice, thinking there was a puncture that was fixed without having found a thin wire that came back and punctured again.
There are quite a few videos and instructions on how to fix a flat and get back on the bike in 5 minutes or less. But every time I've tried to emulate that feat, typically running late for work on a commute, I've found it wasn't a shard of glass that fell out but one of those thin wires that caused the first flat. And the second.
If you're on tour, what's 10 or 15 minutes to really fix the flat the first time? Find a nice shady spot and have a drink and a snack while you're working.