My husband and I are in our early sixty and we want to travel from Siem Reap to Phnom Penh on Mekong Express bus. I need recent riders to tell me what it is like. Is it fairly comfortable. We want to see the country side. Is it worth it or should we fly. I have researched all of the buses and it appeared that Mekong is the best. Are there any day tours that transport to PP. Any advice will be welcome.