That great news that you have an appointment tomorrow. And it’s good that it’s been done by an oral surgeon, they are specialists and really good at their job. They do this kind of procedure all the time , not like general dental practitioners who do everything - check ups, fillings, root canal, gum disease etc .
So you are being seen by one of the top people!
You will be a bit sore - not straight afterwards but after an hour or so when the local anaesthetic wears off. That’s why you need to take the painkillers before you need them IYSWIM.
Now I’m going to lecture you here - you must MUST write down every time you take the meds - how many and what time. You CANT afford to lose track, especially if you take then at night when you are sleepy. THIS IS VERY IMPORTANT.
You also need to look after the socket ( hole in your gum) and not dislodge the blood clot. This is also important , otherwise you will be in a Lot of pain.
The hospital will give you a sheet of paper with aftercare instructions, so do EXACTLY what they tell you.
When I had a similar extraction I felt very shaken up afterwards , a bit traumatised TBH. Even though I didn’t have a lot of pain and I had no swelling as I iced for hours . I do literally mean hours, like 6 - 8 hours. I sat up on the sofa with an ice pack, watched Netflix and felt sorry for myself.
I don’t think I would have been fit to go to a funeral ( although you might cope with it better than me). I’m just trying to be honest.
So unless it’s it’s a very close relative or your best friend I think you would be better to go home and rest . You can just send a message / card sending your apologies and saying that you had to go into hospital for emergency treatment.
perhaps arrange to go and visit the immediate family / chief mourner / next of kin in 3-4 weeks. That’s often when other people are around less and they feel their loss more.
Another option might be to go to the service at the church / crematorium/ etc and then go straight home. Often it’s quite short. Id only do this if it was a short journey and I could drive / get a lift / taxi. No long bus journeys and standing at bus stops. And defo no going to the wake.
Just my opinion / experience.