It smells expensive. [Is really the point. They're a real pair of merchant princes now— or just as good as them— as Astarion makes a show of sniffing that cork first, then crawls down from his seat to fish up two crystal glasses from the underside of the bar and slide them both over to Fenris for pouring.

That's his job.]

He's the only dancer who they like, so i guess he's the only one that's good at it.

It's like being a diamond: everyone wants to be, but not everyone is. Besides, he's not a courtesan, only a dancer, so that has to make it extra special or something.