Decide whether you want a monastery-focused outing or a combined mountain climb. The latter adds an overnight walk and different physical demands. Ask which areas are expected to be open, how much visiting time is available and what documents are required.
Give the heritage visit its own time
Read about the UNESCO-listed landscape before travelling so the setting has context beyond the photograph. Dress respectfully and follow photography instructions. Keep the return evening simple, since the journey from Sharm occupies a substantial part of the outing.