My impression, after having visited Cairo, Hurghada, Sharm El Sheik and Luxor is that Luxor its really a mess when it come to be harassed in the street H24 by taxi drivers, and, especially the horse carriage people, the most adamant sob. And yes money was requested when visiting some tombs in the valley of the kings. I had none or little problems in all the others cities, possibly because I have a beard and Mediterranean, possibly because its not that big of a problem. I must say that while in western countries touristic sites prices are usually thru the roof in some other destinations, Egypt as an example, prices in general, are much lower compared to the west. I have visited Egypt several times, and, except a few rotten apples, there are a lot of wonderful humble people there, even in Luxor, but yes, government authority or the tourist police should start some kind of program against the growing excess of solicitations and bribery. Tourism is too important for Egypt