Last week took the trip to Grand Majestic on Soi 2.
Went downstairs. Stood on line to get my ticket. The ticket told me what parking spot my taxi would be at. Taxi pulled to the spot in 2 minutes.
Driver asked if I'll pay 500 baht total. I laughed and just said meter. Off we went with the meter on.
75 baht in tolls which he asked me for small bills on the way. Around 350 baht meter rate for the life of me I can't remember if that included the 50 surcharge for airport or if I paid 50 more on top of that.
The ticket from the airport says the drivers name and ID number in case you have issues so don't think they have leeway to mess around.
A sign to the right of the ticket que also had a number on it to call if problems with the taxi. I snapped a pic of it on my smartphone while waiting on the line.
Overall a pretty fast and easy experience to get out of the airport.