Today I went to do my first 90 day ' check in' at Blueport, Hua Hin.
Arrived at 12:30 but office closed as at lunch.
At 12:55 office reopened and I took my number, third in line. I was finshed and out in under ten minutes.
I took my passport and a completed 'TM47'. I asked if the TM47 was necessary and was advised that only a passport is required.
The service was excellent with no hassles.
TLDR : Answer Summary
The user shares their experience with the 90-day check-in at Blueport in Hua Hin, Thailand, noting that they arrived during lunch hours but were processed quickly once the office reopened. They mentioned that only a passport was necessary, though they brought a completed TM47 form, and described the service as excellent with minimal hassle.