Costa Rican passport holders are not (yet) eligible for electronic visa. Thus, they would need to go to the nearest embassy or consulate to get a visa. It would seem that the Royal Thai Consulate in Costa Rica is no longer allowed to issue visa, though. They state on their website (
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that the nearest embassy to do so would be in Santiago de Chile. What a mess.
No visa exemption of regular passport holders of Costa Rica either. Seems like quite a hassle to be coming to Thailand in this case.