I asked customer service about this many many years ago
"I just saw your rule that states that you are not allowed to have raffle tickets/chances to win something included in your reward tiers. I am curious if it is just simply “Any chance” is out of the rules or if its reward tier specific? "
and was told "Thanks so much for writing in. Yes, this raffle rule applies to all reward tiers. And in general, its best for rewards to be set up for distribution on a monthly basis, as opposed to give-aways that occur every so often. "
So to me, this tells me that you cannot have it as a reward/goal or part of the base integral part of your projects. But extra’s given out that aren’t part of the base tiers (what they are paying for) is okay(?)
So hosting hangouts/gathering with your patrons and giving away stuff that is extra (not what they actually -specifically- paid for in their tier descriptions) is more or less okay because they didn’t pay for it/aren’t gambling, it’s just something nice you are doing for your supporters. (I guess the argument could be made that they are paying for the “privilege” but i honestly don’t know.)
Maybe i am entirely wrong or maybe the response is outdated. It was 2015 when i asked it after all. Perhaps a staff member could clarify though i don’t suspect they will. I’d imagine it’s a grey area where clarifying a yes/no specifically on things may not play well with the ambiguity of this particular law (last i read up on it anyways. It tries to be specific but it’s still pretty vague.) It would be nice for clarity though. I don’t want to stop giving them offers of gifts and fun things outside of their tiers. I like giving back to the community that houses and feeds me XD