we will be touring Vietnam and Cambodia shortly and, as part of the tour, we'll have a couple of free hours in Phnom Penh. We'd like to visit the Killing Fields but as its out of town we're not sure we'll have enough time. The alternative is to visit the Daughters of Cambodia visitor centre. We are going to visit the Royal Palace and the Toul Sleng Museum the following day, which is our last day in Phnom Penh. Is a couple of hours sufficient to travel to the Killing Fields and do the audio tour or are we better staying in Phnom Penh?
We'd be very grateful to receive your advice or other suggestions please.