Can we bring soda in plastic bottles and cooked food in plastic bag and bottle water

Yes you can bring food we do all the time

Subject to inspection. No bottles that have already been opened.

Food and 2 sealed water bottles are allowed up to i liter I believe. But no bottles in the pit.

Sealed bottle are generally ok, if you are down in the pit they will most likely make you pour the drinks into a cup as there are generally no bottles allowed in the GA Pit