Katara is used to weaving in and out of crowds, in cities and in the bar, so she smiles as she passes the girl with the strange drink.

But she still has to double-take when she sits under the table.

There is a short pause before Katara bends over, peering at her but-- River doesn't look particularly distressed. Maybe she just likes the floor!

Katara smiles.

And hopes the floor's clean.