Thank you ladies. I've ordered a little bottle of champers and taking it, along with a picnic tea (egg mayo sandwiches, no "do" is complete without) to my dad's on the wedding day where we will have a "reception" of our own and a toast. My dad would probably have been too unwell to go too, and he says he has never had champagne before, so it will be nice anyway. I don't know if she has invited the rest of the family, my siblings or my mum but shameful if not.
Yes, I have tried to explain to my son about how I am affected but he doesn't want to know. I started getting worse when he was about 10 years old so he is probably fed up of it now. Plus he did look after me a lot in the early days of it affecting me. Now he drags his feet if I ask him to do anything. Never mind, he's back at college on Monday so I'll have some peace after him being off for seven weeks, which is far too long in my opinion at teenage age.
Anyway, I hope you all have a lovely weekend and the sun continues to shine. 