Are all the comma placements correct in the following direct addresses? I say yes. Do you agree? Victor said, "Thanks, Zach, Pete, Laurie, Joe, and Mike, for your continued support." (Also, is the comma needed after Mike?) Frank said, "Many thanks, Steve and Dave, for your dedication and commitment." (Comma after Dave?) Helen said, "Thanks, Mike." Julian said, "Thanks, Sam, for your continued diligence with the project." (Look okay?) Thank you.