Jibek B.
Google
They didn't explain at the reception what is the difference between entry tickets. So they just asked " Do you want with guide or without?"
Since it was the last entry time, and the tour left was in Czech, we took without guide option. Apparently it was only the entry to the silver mining museum, which is tiny and took 10 mins to walk through and see everything. We wanted to see the royal palace, but the guide locked the door lol.