Time of year
I had SO much fun. I also fell quite a bit in the beginning and got sand into everything - even my mouth and nose! But with a little bit of practice I got the hang of it. Ali was a great instructor and didn't try to overly guide the process, allowing us to 'go with the flow'.
We have been sandboarding for a half day from Sharm El Sheikh and it was a great fun:) I recommend everyone to try this out.