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Dorney Park and Wildwater Kingdom

Highs and lows of a roller-coaster trip

Highs and lows of a roller-coaster trip

If you go

Cedar Point, 1 Cedar Point Drive, Sandusky, Ohio; (419) 627-2350, Must: Cedar Downs Racing Derby, one of the last racing carousels in the world. Miss: The miserable Mantis stand-up coaster, which left my head aching.

Kennywood, 4800 Kennywood Blvd., West Mifflin, Pa.; (412) 461-0500, Must: The Sky Rocket is ideal for kids transitioning from junior coasters to metal monsters. Miss: Garfield's Nightmare, a glow-in-the-dark comic strip makeover of the 1901 Old Mill ride that ruins the park's oldest...