FWIW
both Me & Weazelz (currently in Egypt with Mr Powell) will be diving Air/Nitrox and are happy to go with the standard itinerary and will remain pretty relaxed about it all and are unlikely to venture (too far) past 40m.
From what I have read our hosts will look after us better than our own Mothers would

Cheers and looking forward to a great weeks diving (with my shiny new Salvo

)