Wrestlemania payoff questions.

They always talk about getting guys on to WrestleMania for a payday.

1. We have ran through this before. But Wwe could just give anyone they want a payoff for any reason right? What’s to stop them? Almost like giving out a performance or attendance bonus
2. Do wrestlers get paid extra for doing all the other activities that come with WrestleMania weekend? Access and all that Jazz?
3. And when they do things like add a 20 person battle royal to “get everyone a payday”. Do other wrestlers get pissed knowing that there money is now less because of a time filling battle royal with 20 more ppl to payoff?

Thanks