"Just a vacation. Might as well enjoy the sights since I don't know for sure how long they will be around to enjoy." He's assuming this one is also a Different but since he hasn't ever noticed him before he isn't going to say anything too off the wall just in case he happens to be a local.

Wei Wuxian is graceful enough and can easily transition into the waltz. Even if he isn't classically trained, the idol knows enough about footwork to make it look fairly legit.