They say you don't want to meet your heroes, but those two guys, you do want to meet them, because they do not disappoint. Walken has this amazing sense of humor, and Pacino is like just a sweetheart of a guy.

This quote is saying that some people may have preconceived ideas or worries about meeting their heroes, but these particular two people (Walken and Pacino) won’t disappoint. It suggests that they are both very likable – with Walken having a great sense of humour and Pacino being great to be around. In other words, if you get to meet these two celebrities, you will enjoy the experience!