The owners picked us up from our hotel.
They were very kind. My wife did not feel well and at the last minute decided not to do it (and was not charged for it). I went on my own with another couple. The other couple was kind of slow, so we splited with my own guide and were able to go at my pace.
Excellent ! At some point the quad got stuck in a sandy dune, and the guide was very kind and took the time to get me out.
Overall a wonderful experience, can't recommend them enough!