They sit and chat, at least until Kristoff has to play host.
"There's soda in the fridge if you want," he says; then, he's gone.
Anna's popped in a few times, getting steadily drunker. Each time, Elsa just encouraged her to return to her friends. She's the one being boring and sober.
And tired. A glance to her watch shows that it's almost 11, and she's just not made for late nights anymore.
Maybe it's time to find Anna; doesn't want her to worry. Elsa feels ready to crash at any minute.