I was at this show in Worcester. What stands out in my mind was Jimmy playing his bow while surrounded by a laser light pyramid... It was amazing!
My buddy who was with me that night, always told me a story about going to the bathroom during the show and he swears that Robert was in the bathroom also. He said he had a baseball hat on and My friend made eye contact with him. He said that Robert had a frightened look on his face that my buddy was going to recognize him and reveal who he was. I never believed the story, Like what the hell was Robert Plant doing in a public bathroom at the show, but this story might validate that it really happened.