there are 2 different qq's. Ultimate and regular. Ultimate you get to ride as much as you want throughout the day. (SheiKra, Montu, Kumba, Gwazi lion/tiger, Rhino, Rapids, Flume, Tidal Wave)
Regular QQ its only once per ride and one more from the list above. I don't think either one guarantees front row, but I think in order to expedite loading process they will put you where they can. But it does not hurt to ask