Also, I would recommend to tourists taking route taxis that you still confirm the fare before you get in. One time, the wife and I got into a route taxi (that already had other passengers in it) to go from Home Sweet Home to 3 Dives. I assumed I was going to pay the route fare but when we got to 3 Dives the driver said, "10 dollars". Rookie mistake.

I've have heard others say that you just hand the driver the route fare and get out of the car (which is what the locals do). However, it's probably best to avoid an argument and just confirm the fare before you get in the car.