I'm travelling to Milan end of December 2017. I'm trying to book the tickets to view the Last Supper directly from vivaticket.it.
http://www.vivaticket.it/index.php?nvpg[evento]&id_show=63954&idt=744
I can see that they have tickets available only for few days in September.
Does it mean that the tickets are sold out for the rest of the year?
How many days before do they release tickets for reservation?