Not difficult at allu2026or maybe for a South East Asian like me.Cambodia is a VISA free country for Filipinos. Last October 2022. we visited Vietnam and crossed the border to Cambodia. We just went down for the immigration office, lineed up for our passports to be stamped and we are done! We were even assisted by the conductor of our bus. Our bags were not even checked, too. We just left it on our bus seat.The only problem we had encounter was that the conductor couldn't speak English. Our group (We were just 3) was the only foreigner group in the bus so we didn't really know what was happening. Good thing, there was a good young guy behind us who knew how to speak in English and helped us understand what the conductor was saying.