Heads up: I'm at the Ban Pakard (Cambodia) land border crossing (Cambodian side) and an official here is telling me this border crossing has been closed on the Thai side by the provincial government for fourteen days. Another official here just called his counterparts at Poi Pet and said the border is still open there.
Update: My driver from Ban Pakard took me to the Ban Laem crossing because it was closer and it was open, so I don't know for sure if Poi Pet is open.