contd...
On one occasion I entered Sharm on a non-dive trip, without a visa (as described ...'Sinai Coast only' on my arrivals card), and was told by immigration to go and buy a visa. I suppose to them their assumption is you have simply made a mistake, because few people visit without wanting to dive at Ras Mo (or visit it by tour bus). On this occasion I just pointed to what I had written on my arirvals card and repeated 'Sinai Coast' only, and got my free entry stamp. I remember even the local Egyptian tour rep on this holiday point blank denied that entry was possible without a visa... until I showed him my passport!
Now that the Sinai coast is being promoted for year round sun, as opposed to just for diving, I would expect a lot higher proportion of people entering without need for a visa. So hopefully it won't be given a second throught at immigration these days. But as you can see from the above, the 'accepted facts' on getting a visa have been unclear for quite a while, and I expect this will continue for some time to come.
To your question, where to find this in writing. I don't recall seeing anything from the authorities on it. The best overview I recall seeing is on the Red Sea College website ...
http://www.redseacollege.com/english/sinai_gui de/tips1.htm
p.s. Note I am not suggesting RSC for diving, just this visa info...