@Lynn ********
You clearly haven't bounced out/back on free stamps recently 😮
Thousands of people are denied entry to thailand free stamp entry every week (especially after being here a while).
Immigrations takes a dim view of people "living here" on free stamps by bouncing out/back to milk another 60 day entry.
If you have a 6 month METV that is money well spent as you won't have issues exiting / re-entering during the validity of the visa