I'm curious for when Alegarten comes around. There's a number of items I was unable to buy last year from the brewery. Will I get a chance to get them or will there just be a whole new batch of items and last years items will live forever on my WL?

In the past years they have always brought back much of the previous years items :)

last years items will most likely be there since they kept previous items and didn't announce any retirements.