Phone to the parties and say you've got a cold , one is doing the rounds at the moment …
you don't have to be perfect you just got to get through sober, people will be upset ? people will be disappointed ? yeh well let them be because you got to look after your health and well being and keep sober as your No1 priority . That would then give you a bit more time to wrap presents …
sobriety tops then all the other stuff … and if you don't wrap the kids presents up ,put them in piles throw a blanket over the top and tell them they are only allowed to do a lucky dip and have to guess what it might be before pulling it out
Stay with it , bestwishes, m