Kingston: probably enjoys the holidays bc he has to use his paid leave anyway (but he also likes spending time w the people he cares about :')
Ruth: gets a bit depressed during holiday season (bc its so family focused and she feels like she doesn't have one asdhf) but she tries to focus on her pokemon and getting them all lil gifts ;u; as well as getting gifts for the other aether foundation people like wicke/lusamine. Later on when she makes more friends like Lindow (and Judgement) she tries to get them to do holiday stuff with her.