I have just looked at the programme on iplayer, and ALW seemed to be quite miffed that he wasn't invited! I hope they are planning a big wedding party for family and friends in a marquee in the paddock or there maybe a lot more disappointed people.
I have just done the same AmandaF and I didn't get that vibe from him at all. He often puts that strange serious face on when he's joking and after the laughter died down he replied with "why should they" which shows that he was totally happy with the decision. I think it's wonderful that he has given so many talented people the chance to show what they can do. Some of these people will be the stage and film legends of the future. He's an amazing person.