I can tell you about our experience celebrating my father's 70th birthday. When the audience was asked about celebrations, my father, who didn't like to be singled out looked across the table at me and said "absolutely NOT" and shook his head. So I didn't say anything. When one of the characters came by the table after a bunch of people had raised their hands and said what they were celebrating, my father shook his head again. But I, um, maybe it was the sangria, told the character that we did have one and pointed at my father and quietly said "it's his 70th birthday". My father shot me a death look but all that happened was the character said "we have a big one here! 70!" and then went off again. My father's face was so relaxed after that and he later thanked me for it.