Vash is all but glowing with an expression like warm delight on his face.

He's honestly delighted at the idea that Love was such a popular topic here--it sure wasn't back home. People were always so cold and cautious, but...
He suspects it comes with the comforts of civilization.

He'll follow behind Ritsuka if she starts to lead him towards any sort of place to go look and find stuff to buy---he's mostly stuck to the show floors, where panels were taking place, or people were coming in and out with fancy costumes.

He hasn't yet been to the artist's alley, or any sort of market-area yet.

"Good thing I've been saving bits and bobs from my paycheck recently. Places like this are dangerous on the wallet, huh..."