I've been back to this again recently after seeing Tarkovsky's work for the first time 20 years ago. Whereas I was a 'fan' the first time, I found this time round that I was profoundly affected and moved and impressed in a way that was far deeper than I could have expected. Don't expect a linear narrative. It's about Tarkovsky's childhood, and relationships with his mother and his wife. It's about Russia and a time. It's about extraordinary images and episodes, and sounds and feelings and sun and countryside and memory. Take what you want from it. This is one of the 20th century's major artists at his peak. You need to experience it and let it seep through you. At the same time, it's worth the entrance money for any number of individual images or any one of the individual episodes. With Tarkovsky, the older you get, the wider and deeper your understanding of the world, the more you get out of his work every time you return.
Or you might think it is overblown, boring, pretentious nonesense. I know which side I'm on.