The Elton-Rush negotiation probably went something like this:
Rush: Hi Elton! I would really like you to perform at my private wedding on my Estate in Florida. It would be a great privilige to have you and David as my guests and I will pay you $1,000,000.
Elton: That is very kind of you. But I must ask for one favor as well as the monetary compensation.
Rush: What's that?
Elton: I would like you to suck David's cock while I fuck you in the ass and yell, "liberal whore!!!!!!!"
Rush: Come on, Elton boy. Easy on the envelope pushing. I will give you a million bucks but there will be no gay sex under my roof.
Elton: Okay. Can you say a word or two on your radio program denouncing the absurd conservative agenda against same sex marriage?
Rush: Instead of a denouncement, which would not exactly endear me to my listener base, would you settle for an agreement to refrain from supporting the same sex marriage denouncers?
Elton: How about that, and you anonymously contribute $100,000 to an LGBT rights group or charity group of my choice?
Rush: Done, but totallly anonymous. Anything else you need?
Elton: David and I need a sitter for our poodle, and a pedicurist, and we would like to sleep in your guesthouse if that is okay.
Rush: Done. See you at the wedding Elton, and thanks man.