Two women on a stage

Question: There are two women on a stage. One is in tears, the other is smiling. Who are these women (not names), why are they expressing that facial expression, & what kind of situation are they in? HINTS: These women don't work as employees on setting up the stage. This is not a comedy show. The stage has curtains, and this show is very famous. The person with tears is in fact overwhelmed with joy, and the other is "sad." The crowd laughs and cheers at the joyful woman. These women are no older than 25 years old. Both women are wearing a very expensive dress. What's the answer?

Question: People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?

Question: What can be broken but never forgotten?

Question: Which thing that comes once in a year, twice in a week?

Question: You are trying to get your chicken, fox, and wheat to the barn. However, the barn is on the other side of the river. You are on a boat and can only transport one animal or wheat at a time. You must choose carefully not to leave the wrong two together, though. It's either the fox will eat the chicken or the chicken will eat the wheat. How do you take each thing across safely?

Question: During what month do people sleep the least?