Most cities where intercontinental tourists go to have Uber. And while I use Apple Maps rather than google I’ve used it in dozens of cities in dozens of countries on 6 continents with limited problems. Or of course I’ve just hailed taxied and shown them the hotel business card or location I’m going to.

China is probably the main tricky part, last time I went about 5 years ago I had issues paying with cash, although at least visa was accepted pretty much everywhere.