That river in Egypt

It was a crowded party, and he was deep in the house. It would take the angry guy a while to find him. Damocles breathed in, that was some quick running! He looked down and saw a table covered in bottles and cups. So many people around, he was not a fan. He had never been to a party before, not one like this anyway. He didn't drink alcohol, but had gotten thirsty from the sprint. Could anybody pour the drinks or were these for certain people? He spotted a bottle of orange juice, that was definitely his thing. Surely it would be fine to have a cup right? That's what people do at parties...