What are the benefits of using the online booking system for 90-day check-ins in Thailand?

Another good experience with the online booking system today. Second time using it, doing my 90day check in (prefer in person than the online 90day check) appointment booked for 10:40am. Arrived at MTT at 10:00am and was escorted to the designated online booking section and was seen to straight away 40 mins early of my appointment. In my experience the online booking system puts you in a separate queue and they seemed eager to see to you if your there. Highly recommend the online queue system and advise to get there early.