So don't host official fraternity parties if you're not OK with those requirements. What's complicated about this? Fraternities are "official" organizations; official organizations have to deal with official policies. Just have unofficial parties.
If only it were allows to host a party, with your friends who happen to be in the same fraternity, and it were allowed to do this unofficially, without having to follow university rules.
Unfortunately, this is often not allowed. As in literally, if you have a party, at a private residence, because the people going to it happen to be in the same fraternity, this is disallowed.
Unofficial parties are quite literally often not allowed, and are seen by universities as a way of getting around their draconian rules, and you could actually get in trouble for hosting them.
Sorry, I'm not a native speaker. I think I used the word request improperly. I am aware that those conditions must be met. But then again I am not surprised that those were stated as requirements rather than requests.
From what I understand a request is just a polite suggestion easily, routinely ignored if it requires additional work or foresight and deviates from pre-estabilished culture.