In the lobby, you could place like 3 bows and 1 target so there is something to do while waiting.
Or ANYTHING else for players to do while waiting instead of trying to overhydrate others with water! If there are other actitvites they should be restricted to a certain area so they're not used to annoy other waiting players.
@SensitiveAlpaca: yes exactly my thought! they could place the bows in the top side of the hill and make it go back in plce if you quit the area or put a maximum amount of arrow. As well as your idea of just other activities to do. i agree very much.