I sent away for travel brochures from the Jordanian embassy a couple of years ago. There is a lot of old stuff there. And Wadi Rum is on the list. I haven't done as much research on Cambodia.
Both Jordan and Cambodia are too hot in the summer - that is why I am planning the trip in December. My father gets to pick. I konw he has wanted to see both Ankgor Wat and Petra. Maybe we will do one this year and the other one the next. I will talk to him this weekend and figure out where we will go.
I am thinking about taking 10 days to do the trip.
As for contact with work - I don't take too many vacations - but when I do - it is always laptopless and cell phoneless!