Brother in law and his fiancee are getting married soon. Fiancee has always wanted a big wedding and has been planning it for years. However due to Covid they have decided to get the legal stuff out of the way and have booked a registry office. Parents and their own children are allowed to attend. Bil (DH brother) has sent a message in their family what's app group inviting close family over to their home the day of the wedding for some food. I really don't want to go, I've a difficult relationship with my in laws and don't enjoy their company. I have to take my children out of school early as wedding is on a weekday. DH has to take a half day from work. I really just can't be bothered. I suppose I still hold a lot of resentment from when myself and DH got married. Mil was a nightmare and his brothers didn't attend wedding as we got married abroad, which is fine but they never acknowledged it. There has been two other family weddings and of course mil has gone all out for them and always makes snarky little comments about my wedding. I just really don't want to go and put a face on and pretend Im happy to be there. I understand DH wanting to go and he really would like me to go but not in a pressurising way. How do I get out of it without being seen as an absolute bitch which they will think I am.