I had my first visit at Immigration here in Bangkok yesterday and I was glad that all went really smooth. Apart from less people in queue, the system was also simplified making it a bit faster for one to file an extension. I noticed new faces as well taking care of the documents though I have to admit, it's been a while since I've been there. And the best, the officers were more welcoming and friendly despite of them being obviously exhausted and tired. That deserves the commendation -big time.
Though the office closes at 5pm, getting the queue number ends at 3.30 so if someone plans to do immigration stuff in the afternoon, it is best to get there before the said time. I learnt as well that the govt. complex has new set of free shuttles that send people to the main road. One just needs to exit west as the buses are parked in the area. It's like from the immig door, one must turn right heading to that spacious area, go straight on and turn right again to the very first gate one can find. That gate is the exit. I have no info on the specific schedules but I was done with my business at 4.20 and was able to avail the service. I'm thinking this is a good info and worth the share.