Two final bits of contrariness, both terribly sensible.
Tip #7: Don’t ask the price of a taxi before you get in.
Guidebooks always say “Agree on a price before you get in a taxi.” I think I’ve even written this myself. But nothing marks you as an out-of-towner like asking a cabbie, “How much to…?” This makes the cabbie’s eyeballs flash dollar signs, just like in the cartoons.
So your one job as a visitor is to find out in advance how much a taxi should cost (ask at your hotel, or ask your Airbnb host, or whatever). Then just get in the cab, say hello in at least a loose approximation of the local language and state your destination. Pay the known fare when you get out (or, in known antagonistic-cabbie towns, get out first and hand the money through the window). This is what locals do, and it works!
Even if you’re in a metered-taxi town, it’s nice to get a ballpark estimate, for peace of mind.
(Why are taxi drivers the world over so prone to unscrupulousness? They are their own strange tribe. May the honest and generous ones multiply!)
Tip #8: Sleep now, not when you’re dead.
A very concrete aspect of Tip #4 (“be lazy”). Again, you’re on vacation – why tire yourself out? Take plenty of naps. Observe the siesta culture, if there is one.
There is nothing more delicious than waking up in a strange place. (Freya Stark, by way of Matthew Teller, says it even better.)
More practically, the better rested you are, the less likely you are to have those little streetcorner meltdowns, where you’re hungry and tired and just can’t make a decision, and suddenly your travel partner is looking like the worst beast on earth, just because he/she is also hungry and tired and can’t make a decision.
One person I know calls this the Death Mope. The Death Mope is easily avoided through adequate rest. (And carrying some peanuts in your bag–another tip of mine. But there’s nothing counterintuitive about not starving.)