質問: what does みんなノリが良くってメアりいさんって書いてある紙を掲げてくれたり mean? what does みんなノリが良くってメアりいさんって書いてある紙を掲げてくれたり mean?
回答: because everyone was so upbeat, they were also holding the paper that said "mary-san" over their heads and then....