I got a lady at suvarnabumi and she started looking at every page on my passport even from 2022 complaining i come to Thailand too often despite i spend lot of time abroad or traveling around the world for work (i think they dont like stamps from laos and cambodia/vietnam) , then called her supervisor and got scrutined and let me in for "the last time" and got told to get a proper visa. Another friend at Dmuang in a new passport was stopped after some trips to philippines or cambodia (3-4 trips) but let in for the "last time" as well. A friend on ed visa was stopped asking at suvarnabumi to write in thai by a lady officer, and denied as he could not as just started the school.
Some people say to try men officer, but not sure. What about trying other airports or CM? some have international flights, even pattaya one or krabi.
Everyone say get a visa, but if someone is really a tourist or travel few months per year, whats the problem with that? need to do a smart visa? crazy
There is even a METV visa for travel 6 months, why they would deny entry if is even allowed to do that with a paid visa? They allow to buy. Dont understand really.