I was at Chaeng Wattana (CW) on 30 Aug to submit my TM47 in person because I had yet to receive approval for my online application made on 16 Aug. According to the officer at CW, the reason for the delay was because of long holidays and unusually large number of online applications.
Here's my guide for anyone wanting to apply in person for the TM47 at CW:
1. Make an appointment online via https://www.immigration.go.th/?page_id=20131 which you will subsequently receive a system generated email confirming your appointment.
2. On the appointment day, bring along your passport, the previously approved TM47, copy of the email confirming your appointment and a duly completed new TM47..
3. At CW, proceed to Counter 4 to submit your TM47 form and email confirmation. You will then be given a Blue Docket (a 3"x 3" plastic docket).
4. Proceed to Cubicle B66 (not Counter A as indicated in the email). Present your documents to the officer there when he/she is available. They will attend to you even if you are 20 minutes or so early for the appointment.
5. All in all, from Counter 4 to getting the new TM47 approval, it took no more than 15 minutes.
Hope the above will guide you accordingly.