A tray that has a drink a plate of food, and a bowl of veggies on it.
A tray holds a meal of meat, vegetables, and a drink. 
a black tray with a plate of food and a bowl of vegetables and a drink
This is a meal of salad, pizza, carrots, and fish.
A full meal with a drink sitting on a tray with silverware next to a slice of pizza and piece of fruit.