Turn up one evening with an ice cold half litre of vodka. Drink it 60/40 him/you. Pull a second bottle out of your bag and make sure he drinks at least 75% of it
This is exactly what I did the first night I met my missus' family, however, it all went a little pear shaped and I projectile vomited over the bathroom wall (thank God for tiles) before passing out. It was left to my brother in law to check on my breathing during the night.
I think the family all seemed so pleased to see me in the morning was because I was alive.... Perhaps my Father in law and brother in law were in fact expressing extreme relief as opposed to happiness.
Since then i have been to over 6 Polish weddings including my own (the only wedding where I was still upright after midnight) and out of all those crazy wedding there has only been 1 fatality. Not bad eh!
but still I would like him to accept me.
it isn't about accepting you, it is about accepting the fact you are banging his precious little daughter. He will only get over that if he thinks you are a man.
Solution: Buy him a decent bottle of vodka or whiskey, either really..... and get absolutely ********* with him, man to man and all that.
If you are still alive in the morning and haven't gone blind, you are in there.