The queue for The Last Supper starts when ticket bookings open up. Tickets become available nearly four months beforehand, and they're snatched up swiftly. To secure a slot, you need to act fast and in advance when making your reservations.
After securing your tickets, you can head to the church at your designated time. Entry to the church is open to all and doesn't necessitate tickets.
If you face the church's front, you'll see the entrance on the right side. Inside, signs or staff will guide you to the ticket office to see The Last Supper. At the ticket counter, there are various groups: those picking up pre-booked tickets, others waiting to enter, and some hoping for last-minute tickets. By opting for skip-the-line tickets, you can save over an hour of waiting time.