What's the difference between "ma ka pāʻina" and "i ka pāʻina"? This exercise requires "ma". The exercise "Play music at the party" requires "i".
Hānai ʻo Keoki i nā keiki i ka pāʻina.
I used 'i' since a party is here today and pau tomorrow. My mana'o is that it
isn't always at a fixed location.