Food and drink is not permitted in the auditorium or the lecture halls. Uppsala University is a cultural landmark, which only allows for food and drink in designated areas, for example the main entry hall, and in Café Alma on the basement floor. (As is the case with all venues in Sweden, you are not permitted to bring your own alcoholic beverages!) Water is of course permitted in all spaces, and Swedish tap water is commonly served everywhere.
The restrictions around food and drink are due to fact that the stone floors, the tapestries and in some cases even the furniture in most parts of the University Hall, are one of a kind. The stone floor in the main entry hall is the only one made in this very technique, that remains intact in all of northern Europe. This leads to some very particular restrictions when if comes to refreshments; the classic Swedish pastry Kanelbulle (a cinnamon roll with nib sugar or pearl sugar) is absolutely prohibited in the entire building due to the damage the sugar can cause to the floors!

As mentioned though, students and visitors usually eat at the in-house restaurant Café Alma. We are leased to say that despite usually being closed on weekends, Café Alma has decided to keep extend their opening hours for the duration of the con!
More on this, shortly.