No, this is our special day and we would like to reserve it for us.
If you eat something in the Underworld, you will have to stay there forever. This is why we recommend eating before-hand.
She is not. However, she still wanted to be a part of her daughter's special day.
Early! There are lots of guests attending the wedding and everyone is going to be DYING to get in! (Get it? Because it is in the Underworld?)