you'd also be an asshole. you don't own the park. you have no exclusive rights access it or use it.

and tying it up for personal use and going around kicking out other well meaning people is just you being a selfish dick.

if you want exclusive access... hold your party/event in a private space.

it's not that hard of a concept... but people want the privileges of exclusivity without the costs. and get butthurt over it for some stupid reason. if i wanted a party that was exclusive to my friends/invitees only I would never hold it in a public space.

i've inserted myself into plenty of events at parks. usually it's only the dipshit karen types that have an issue with it. most people don't care because they aren't anxious/controlling types and they understand that their event in a public park means they will have to be welcome to strangers. especially when your event spills over into a walkway or heavily trafficked space.