Excellent advice Rick,
As usual.
I'd like to add one vital thing, though. DON'T let the taxi mafia at the airport know where you're headed. ALWAYS tell them you're going to a different hotel than where you're actually going. Inform the driver later. Insure that it is in the same neighborhood and slightly closer than the name you gave so that the driver can't get away with charging more.
While trying to get a taxi, other mafiosa swarm around, not so much to underbid, but to intimidate your intended driver from giving you a fair price. You DON'T want them to know where you'll be staying.
Those taxi drivers only spend half their time at the airport. The rest of the time they are NOT plying the streets looking for potential passaengers at standard fares. They are too good for honest work. They and their mafia buddies are at the tourist hotels waiting for victims. You DON'T want them hounding you every time you walk out the door, or go down to the lobby.
By the way, DON'T let any of the driver's "buddies" go along for the ride. The 2 of them could mug you.
Edited to add:
DON'T let him put your bags in the trunk, either, he could take off with them while you're standing at the curb. Put them in the back seat at the same time that you're crawling in beside them. If there's too many people for the bags to fit, make sure that somebody gets into the car before the bags are put in the trunk.