In the previous thread with the same title I was asked how it was with the pre booked transportation.
http://www.ukclimbing.com/forums/t.php?t=519880
We got a denied boarding with Turkish Airlines and our plane arrived one full day later. The driver waited for us in Amman and he was a very nice guy. I would buy his services again. I've also written a short article on other things I learned that trip. You can read it at
http://www.patagonia.fi/blog/2012/12/wadi-rum-part-5-logistics-and-tips/
I really hope this is of some help to somebody. Wadi Rum is a very nice place and the people are very friendly.