The audience sighed and giggled at the sight of Sarah and Aiden kissing like no one else is there. Well, most of the people know them as a couple who does their own thing, but this is the first time to see them kiss like this in front of everyone. And everyone IS watching because they are standing on the elevated podium with Mr. Price between them (when looking from the audience's perspective, he is actually two steps away from them).
Mr. Price wanted to leave. Standing so close to the kissing couple is uncomfortable, but he needs them to sign the documents, so he will stay there and maintain his poker face.
JoAnna (and almost everyone else) watched Sarah and Aiden kissing and she rolled her eyes when she saw that no one will say anything and bring the newlyweds back to Earth. Don't these people know that those two can go at it for hours?
