I understand that it means "there", however I feel like native speakers drop it into sentences and I'm not sure if it might mean something beyond "there"?
I'm specifically asking this because I was watching a streamer who said "você tem planos aí para fim de semana ou dia de semana aí, vulgo hoje?" and I have no idea what aí means in this sentence.
aí
are meaningless - don't add anything, they are more like a non-formal way to call your attention than something that you actually need to translate. If I would translate, I would use some slang from streets...