5. Take Public Transportation As Much As You Can
It might be tempting to just take a taxi from the airport to your hotel room, and then Uber yourself around from attraction to attraction, but it's also going to cost you a pretty penny. Instead, look up how to take that city's transport beforehand.

Before I touch down at my airport, I like to write out a little itinerary that explains how I can take public transport from the terminal to my hotel room so I'm not stressed out wheeling around my suitcase after a long flight. I also look up how to take buses and trains to certain sightseeing areas so I don't get tempted to give up and wave a cab while I'm out on the streets. 

To give you context, when I was in Ho Chi Minh in Vietnam, a cab to my hostel would cost around $15, but the bus cost me 10 cents. And all it took was me Googling the directions for 30 seconds. On top of that, a trolley in Amsterdam cost a little less than two Euro to get to the other side of the city, where a cab would cost over 10. It all adds up.

Image found on Pinterest here, from Barbara Eggermann.