I'm going to HCMC this weekend to find a reputable bus company to go to PP. A fellow American recommended Mekong Express which I'll gonna check out. I've heard Cambodian-run transportation/tour companies are better than the Vietnamese companies so what other Cambodian buses should I check out that has both terminals/offices in HCMC and PP? Don't just spam names but let me know your experiences with them as well.
I'm particularly concerned about the border crossing since it's an opportunity for unscrupulous operators to fleece uninformed tourists. I've been told it's $20 for a VISA but what about the under-the-table fees? I wanna know so if the operators says something "I'll need $100", I can tell him to go fly a kite.
By the way, what happens if something goes wrong and I get off the bus at the border? Can I just "walk across"?
(note this is a duplicate post copied from the Vietnam forum because I'm seeking opinions from Expats in both countries)