Looking for an advice. We are planning to drive from Catania to Agrigento in October and would like to detour to see Enna, maybe have lunch there, and end the day going to the Valley of the Temples. Does it sound feasible? Any advice on the timetable?how late can we enter the Valley and not to miss much? Do we need to book this visit ahead or can we buy tickets at the entrance? Thanks in advance.