Long time since i have been on here but i need some advice from you wise people! 

Osd got married secretly 18months ago. Only myself, her dad and his parents know. She has kept it quiet from her sisters, mother and maternal grandparents and her husbands parents. 

She is now planning a big 'wedding' in May to which everyone is invited. 

I dont want to go! 

Was told today that OSD22 wants to have a meeting with SO and her BM to discuss her future wedding plans.
SO let me know immediately she has asked him to do this and he has agreed.

While i have no issue with him doing this i dont understand the need for various reasons.

1. The most concerning one - she is already married!!! Though only myself, SO and SO parents know this!
2. The 'wedding' date is 2 years away
3. I personally can't see why there is a need to have this meeting unless she is expecting them to pay for her future charade.

Eldest sd got engaged just before Easter this year. She announced 3 weeks later to daddy that they are getting married this Monday and she would like him there. This didnt go down well as SO and I are off on a little holiday..been booked since Jan.
Anyway she refused to change date and asked grandma instead to be a witness. Grandma laid it on the line about how upset dad was and she has now changed the date to Thursday so dad can go.

Watching tv with my SO and sd19 came and sat next to him. She then proceeded to swing her legs over him and lie across him.
He did nothing!

I got up and left the room, he then went outside so i followed and mentioned very calmly that it was not normal for a 19yo to sit on the sofa acting like girlfriend/boyfriend with her dad. He needed to put a stop to it or i was going home

we went back in and sat down and she tried it again, he did stop her and after 4-5 attempts she finally got the message and gave up trying.