No, parasailing and jet skis are not included with the package at CN. We were there in February and paid $50.00 for 30 minutes on a jet ski and my sister and her husband paid around $90.00 for the parasailing (not sure how long they were up, however).
Parasailing and jet skis are not included, but waterskiing, windsurfers, hobie cats, scuba diving, snorkeling, paddleboards, etc are all included. Couples doesn't operate jet skis or parasailing,but it is available from 3rd party vendors on the beach.
You need a better travel agent. Parasailing and Jet Skiing are NOT included with your reservation. You can do it though locals, but you pay through the nose for it. The water sports guys can set you up with one of the locals. Parasailing is very dangerous in Jamaica beacuse it's not regulated and Couples recomends NOT doing it. When we went in 2006, the harness was sturdy enough, but it was held to the boat with a skinny, frayed rope and a tiny knot on the harness. I was scared to death!