Can you use a six flag season pass for hurricane harbor

Each pass is individual but yes the harbor has its own season pass if you don't have it buy the ticket &upgrade.

You would have to buy the season pass for both parks

Yes

If u opted for both parks when u purchased ur seasson pass than u should of gotten both parks for 1 price deal

Yes you can .

My Gold Season Pass and my nieces Diamond Membership's are good for all Six Flags parks/Waterparks in all of North America. Next week we are going to Discovery Kingdom and Hurricane Harbor Concord.

Season pass are different from there membership pass