Birthdays late December/early January suck.
Everyone is busy, everywhere puts the prices up if you do manage to get people together and then there's the joint Xmas and birthday gifts, ugh.
Anon needs to get out to a all you can eat buffet, eat a good meal go home and sleep it off. Probably won't land them a partner but they'll get to try a bunch of foods and have a conversation starter for when they do meet up with someone.