There is a very small souvenir shop in the lobby that had pre-made breakfast sandwiches and pastries in the morning, along with some fruit (apples, bananas). You could also refill mugs there.
It was very unimpressive, to the point of being annoying, that I had to wait to get to a park for a real "meal."
I wouldn't waste time taking the bus over to Jambo just for a QS breakfast.