For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
Well written as always by S. Michael Houdmann. If we take scripture seriously there can be no realistic doubt that Mt. Sinai is in 'Arabia'.
I have watched the video by Robert Cornuke, and his journey retracing the Israelites' escape from Egypt is very convincing, from the crossing of the Red Sea via an underwater land bridge (which still exists today) through to all of the evidence for Marah, Elim, and finally the physical evidence on and around Jabab al Lawz itself.
Definitely worth a look.