I've never seen any of the Kardashian shows, and I can't stand Kanye "I have more ego than the rest of the world combined" West, however...
The article makes it sound like Bocelli expected to be a guest and it was sprung on him that he'd be expected to sing, yet other articles (a quick google tells me) say he sang as she walked down the aisle. Surely he knew that was the plan, what song she wanted, etc. I can't imagine having someone like that to sing at my wedding and not
inviting them to stay. As far as payment, that's something that would have been worked out long before the wedding. Even if he had his people contact her people and they all agreed payment would be made after the wedding, something is going to be in writing if he's to be paid. It'll be interesting to see if he issues any type of statement about this.
I would love for someone to ask the Smiths why the heck their son was allowed to wear a ridiculous costume to a wedding. Unless there's a lot more to that story and the Bride and Groom actually requested it for some reason, that comes off as a brat kid begging for the spotlight. Which makes me wonder why Bieber wasn't there since that's usually his role.