If you have to visit museums in the morning and do not want to stand in line, then tickets are better to buy in advance on the Vatican's website vatican.va. And if you go after lunch, then there will not be a queue and you will buy tickets on the spot quietly, as a rule, but you do not have to spend a day on the day.

Tickets in the Vatican Museum it's better to book in advance. If you buy on the spot, then there can usually be a very large kilometer line, and you can stay there for 3 hours or more. Also with pre-bought tickets without a queue.

Reservation on site with simultaneous payment credit card - possible. Buy tickets on the spot is also possible.