Curate, connect, and discover
I see Will being the most introverted and socially anxious person because he went to camp at such a young age and he is a year round camper and the only adults that he really talks to is Chiron and Mr. D so I feel like he's scared to talk to anyone outside of camp. When Will and Nico go out to eat, Nico always orders for Will.
Nico on the other hand once his trauma gets better he is very extraverted and loves talking to people (mostly people he knows won't make fun of him or hurt him in anyway) but he still wants to appear mysterious and scary so he represses the urge to overshare things but he still needs to recharge after doing something
I feel like Nico would yell at the manger when Will asks for no pickles