I'll be in Krakow late September/early October and plan to visit the factory, and I see the ticket rules have changed as of May 1, 2025. In person tickets will no longer be sold at the visitor center, only the factory ticket office.
As for online ticket sales, the website says they go on sale 120 days in advance but it seems (just after a quick check) that in practice they are being released 90 days out. Does anyone know if each day's tickets go on sale at midnight local time (similar to the Vatican Museums ticketing system) or if they get released in chunks? Or, anybody have any luck getting them in person at the ticket office on the day?