From what I've observed, practically all Gulf / M.E. carriers tend to massively increase capacity to CAI during this period. KU on somedays has even operated 6 flights I believe
Vimanav, this increase by RB
is not an increase to cope with the extra demand at the end of the summer, but a permanent increase. Indeed KU
add many extra flights to cope with the huge increase, with upto 7 flights a day (B777/A340/A300) during the end of August/start of September. They will increase flights to CAI this winter by 2 extra weekly flights.
What will be the best time to visit SSH? And where to stay (4-5 star accommodation)? Is the Ramadan period good or will there be restrictions on during the period?
About the best time to visit Sharm...even though it is a year round destination, the peak period is from September-May, when the weather is perfect (but prices are higher). About accommodation, I would advice you stay in at least a 4 star hotel (they have no hotels less than 3 stars), so you can get the most out of your experience. If you go to one of the major hotel chains like Hyatt, Marriot, Hilton then I can almost guarantee that your stay will be like heaven. The best place to stay is Na'ama Bay which is the main area of the resort where the main hotels, restaurants, cafes, shopping malls, clubs and activities are.
As for visiting during Ramadan (this year it should be from mid October to mid-November), you should have no problems/restrictions in Sharm El Sheikh. The reason being is because Sharm is a tourist resort so you don't have many people actually residing there (The Sharm El Sheikh village itself is around 10km away). So this means you'll find all shops/resturants/cafes open as usual and you'll be able to eat/drink as normal. If you decide to visit any cities like Cairo, Alexandria or Luxor, you're still allowed to eat in public, but out of respect for those fasting one is advised to be as discreet as possible, though you have to remember some shops will be closed. But as Egypt is a huge tourist hotspot don't worry too much (besides considering that 10% of the population is Christian, you'll find many Egyptians not fasting and eating normally).
Anyway I hope this helps and please do not hesitate to ask any questions. You are also more than welcome to email me.
p.s. sorry for the late reply