Look here for the first hint
There are two different bakery shop menu’s and also two pictures of the champagne tower
Look here for the second hint
The coloured glasses are standing in the shape of a number
Look here for the third hint
Trough the bakery menu you can find the names of the pastries on the tables. Find out how many there are per sort.
Look here for the fourth hint
To find the engagement date you’ll need to make the sum. From top to bottom you can find a number in each row.