Nara Park is a MUST when you’re in Japan. I went from Osaka, which was a short train ride away. It’s a big park and beautiful sight seeing around the temple. You pay for the crackers and can bow to give them to the deer. They are friendly, but some will chase if you’re taunting them. I did not experience this, however my recommendation is to hide the crackers in your pocket and just give one at a time.