That's not true, Cyrus and Aaron were both in Cyrus and Eleanor's wedding scene.
I enjoy Harold in small doses, but he's my least fave of Blair's parents.
But I'm so glad we're agreed re: the aisle walking scene. I know that they wanted to make it cute, and Cyrus is a fan favorite, but I really felt like if she was going to get married to someone other than Chuck, it should've followed pattern to the whole "scrapbook", which I'm sure had just Harold.