Re: OOC.
Nicky would at least make an appearance, with a birthday cake/favourite dessert he made himself, from scratch because I have fully accepted the head-canon that Nicky is the mom friend who cooks and cleans and stuff for the team when he can. I'm assuming they talked, and he would remember if a particular type of cake or dessert was mentioned as a favourite, and he'd bring that. He also had a small gift box for him. It's a simple, but old and very well-made watch. It's the kind that has to be wound every day. He wouldn't stay very long, just long enough to know Scorpius at least liked the cake/dessert