That's usually the case...but from what I've heard, not for this, so far. It's really just luck if you get the front seat.
I think assigned seating, but allowing you to pick the front/back if you ask, is a really good idea for parks. It keeps the station from turning into a mess...but I don't understand KD's reasoning for not allowing you to pick the front, unless they didn't make an extended line for the front or something.
As ECG mentioned in the GeForce topic, Intimidator 305 trains have been having some problems. The red train's anti rollbacks were acting up before Intimidation ERT, and I believe it's the second to last car has been having some wheel troubles (if it's the wrong please correct me). Hopefully it's nothing big that can cause another GeForce type incident.