Fuck, somebody help me out pls

Quick, gimme some suggestions on how to survive the New Year night with 3 relatives I don't particularly like or have things to talk about with?? My sister bailed and made other plans and my cousin will be at work and I found all this out last minute so now I'm stuck as the only young person at this boring and awkward family gathering and it's too late for me to back out too now. T^T help
Thanks in advance