So, you've got a plan already.
Sat. 14/9 is the tenth edition of Černokosteleckého Vykulení at Černokostelecký Pivovar, which is very similar in nature to another great beer event, Vysmolení.
Though, as you can see in the image above, the beer list is much larger than the event in May, there'll still be beers tapped in different ways straight from freshly lined wooden barrels, including a couple of Germans, plus a Czech Porter that's been lagering in Catalonian red wine barrels since March, I believe. I can't imagine a better excuse for not missing it.
PD: Buses to Kostelec nad Černými Lesy leave every hour from Háje (381, 387) and take 45min to get there.