@Nick ********
I've been through that border too. For the vast majority of my Cambodia trips, I actually enter the country and spend several days there.
On that occasion (2014) I was doing a border run, but I spent several hours in Cambodia. I wanted to see Pailin so a Thai speaking local who used to work in Thailand as a laborer took me around on his motorcycle. First we visited the nearby Ban Pakkard border crossing (Psar Prum on the Khmer side), then we went to Pailin for lunch, finally I visited his home, right next to the Thai border (literally 50m away) located in a village that's part of the border town of Daung, which is next to Ban Laem.