To get a Non-B with WP you need to be employed by Thai Company. For O and WP is same, Thai company. The LTR is available if you earn enough and the company is large enough. That is a better option.
Yes as it's new most never put it on. I used the drive through window but walked through. My bike I parked next to the coffee shop. The walk up window was closed. :-)
Literally did mine 5 mins ago at Chiang Mai. Took less than a minute. They kept the TM30 this time. Never done that before. I also needed my TDAC/Arrival Card number from the TM47 form