During Alegarten, the Brewery opens which houses three different shops. Food, drinks, and clothing/other. They rotate so at certain times become available. All the items cost sP, so you might want to save up a bit for it. :)

YES YOU SHOULD ALWAYS PREPARE gosh

Keel Hauliday and Alegarten are both lots of sP haha

Preparing for Alegarten to me just means making sure you can be on during each of the rotations at least once xD