Why Wait When You can Get a DEPARTING Taxi for Meter with No Waiting
Terminal 2 is the same as any other. Just start walking with the flow of traffic (to the right) and you'll never get more than 100 meters from the terminal before an empty taxi who just dropped his passenger will proposition you. He cannot stop long to bargain, so just offer meter and as soon as he says OK throw your gear in the back seat and off you go.
You will not get the slip of paper with drivers license number but you yourself can jot it down once in the taxi. Get DRIVERS name from his ID, not just cab #. Taxis lose their permit if they get several complaints so just stick to the agreement if they whine about traffic etc and a tip. Better not to even discuss it again until you and your gear are out of the taxi.