Usually you can negotiate with the rental company, especially for daily rentals, which should save you some money off of the posted hourly rental price. If you're interested in water-skiing, you will likely have to go to marinas instead of your hotel rental shop. Instruction is usually available for beginners, and equipment rental is usually included in the price. Personal water craft such as jet-skis and wave runners are available for rent at the marinas and many of the hotels. If you've never ridden one before, the sit-down wave runner would likely be a better choice for rental.
Prices vary from place to place, but always try to negotiate on price.
You can usually get a better rate if you threaten to leave and find a better deal elsewhere. Parasailing is a popular tourist attraction at Cancun. Various companies offer parasailing, but we suggest going with the more established, larger operations as they pay closer attention to safety. Accidents can happen, so be sure to check harnesses and straps for wear and tear. This price includes transportation to and from the park and your entry fee.