The Eventjet online sales portal allows a maximum purchase of 10 tickets per transaction, so the remaining tickets must be purchased in a second transaction, 21 or more tickets require a third purchase transaction, and so on.
If you need the tickets in combination with accommodation, you can order a package directly from the Tourism Association Zell am See-Kaprun. In that way, the weekend tickets for the Line Dance AlpFestival and accommodation in the desired category are included.