Always worth a visit/revision on history!
Due to the weather, it wasn't too crowded which was great for pictures and snacks in the cafeterias; however, some repairs at both locations negatively affected our expectations.
In addition and regarding the booking tour operator: Experience First, we missed our guide from the very arrival and, "in situ," we realized that there were cheaper offers (tickets) than the one on TripAdvisor.
So, places 4*; tour operator, 3-.