I have always used this dressing called "golden dipt." Used to get it in the seafood department at QFC or Safeway. Comes in Cajun and regular flavor. Both are good. You bake the fish so it is a bit healthier. Last time couple of times my wife tried to find it at QFC she couldn't. Might still be at Safeway.

My buddy double deep fries his. This is even better. Best fish and chips ever.

Sounds like a great trip.