Thank you Ken, I spent a lot of time there (from 9:30 to 16:30 😅) climbing on the tanks was a lot of fun!
Quite easy to reach. Express train from Beloruskaya train station to Kubinka-1 in 58 minutes, then a regular taxi to Park Patriot or the Tank museum. The drivers are used to foreign visitors he gave me a card in English with his phone number, I called and he picked me up on the return. I just purchased normal tickets, there is no more foreigners pricing/photography extra like it used to be, Monino as well. No need to show your passport also, only for the bikes rental.