Trip on camel
You have two options when you go up Mount Sinai, you can do it on foot, as most hikers do, or you can go with a camel. They charge 20 euros generally going up and back down with you. There is a small Bedouin camp when you go out of the monastery of Santa Catarina with camels where they are waiting for you to offer your services. The truth is that it is very difficult to climb, it is about three hours of climbing and two hours to go down. If you want several days in the wilderness there are also these options, but if you do not show up in advance or do not bring food to eat you will have limited options.