Aw Tawn, I'm sure they will understand, and although you will all be a little sad that you can't be there, at the end of the day there will be another gorgeous addition to their family so it wont matter in the long run. And you can all celebrate together at a later date.
I don't know why but I'm still tearing up as I wrote that!! Yay for hormones lol!!
I've decided I'm not hoovering upstairs. As long as he does it tomorrow, coz otherwise I wi actually kill him lol!! Instead I'm just washing up and cleaning and doing the washing, less strenuous lol!