If I don't use the boxes obtained from 25th Tibia Anniversary will they disappear or remain as boxes?

Question

For example, I have balloon and carpet boxes etc. Will they remain in the boxes after the event? Will they disappear? I don't want to use them I want to save them is why I ask.

Answer 1

Since they are traceable on the market, they will not disappear. I am investigating other ways to confirm that.

Answer 2

Mirade has confirmed it.

The unopened boxes from the ambrosia buffet will remain in the game after the event? Thanks

"Yes, unopened boxes which you obtained from the buffet during the festivities will remain in the game.

Yours, Mirade"

Source: https://www.tibia.com/forum/?action=thread&postid=39265273#post39265273