I'm contemplating just hiring a car/driver for our half day to the Valley of the Kings & Hatshepsut since I understand that the guides can not accompany you into the temples.
That being said:
a) Will not having a guide invite all sort of uninviting touting/self proclaimed guides/sales/camel drivers harassing us?
b) Without a guide, is it difficult to find our way to the various tombs? Or will we be wandering around in circles?