DH invited two couples for NYE, they're lovely people and one of the couples we do see fairly regularly. So its not about them exactly.
My anxiety stems from my worry that they'll expect me to stay up till gone midnight. It might seem silly to worry about that as it is NYE after all but I have 3 young children who wake 5/6am, these couples are childless so they can sleep in all day if they want.
Also I have terrible insomnia so tend to keep pretty rigid sleep patterns as too much change exasperates the insomnia and can easily take me 3-5 hours to drop off. I'm usually in bed around 9-10pm to attempt to bank as much sleep as possible but I know on nye ill be so anxious about needing to fall asleep ASAP to be able to rise with the children that I probably won't be able to sleep through the worry of needing to sleep.
Gah, I wish DH hadn't invited them.