Is there a additional cost for the bumper boats and gocarts or goes that go with paid admission

Yes its included

Correct everything is all included with one pass.

Its included with paid admission this year. The best deal for WWW is to get the season pass around October to December which only costs 75 bucks a person, which you can go anytime of the day for free and bring guests in for 5 bucks after 4pm everyday.