It really depends on what the intent behind the event is
If it's purple pilling normies, you're going to have to take a completely different tack.
If it's connecting with Nostriches & talking about local projects & initiatives, I don't think it matters.
Nostr & Bitcoin go hand in hand. I don't think enough Bitcoiners are paying attention to it & they should. The town square is moving (it's already moved for some of us).
Either way, no one needs to ask permission from anybody else to run a Nostralia event.