Really loved this deal. I rented my bike for 4 hours and that was more than enough time for one person. I can see how you may need more time if in a group to cover the whole park. Also, the top section of central park is very hilly just FYI and doesn't include many landmark stops, so if you want to optimize your time avoid the long loop at the top with the hills.
The bikes were very comfortable and easy to ride. The place you had to get the bikes from was a bit out of the way so it took about 20 minutes away from our time. We were also charged a late fee for only being about 5 minutes late because we got lost bringing them back.
The bike riding was fun.. Need to cautions visitors that people in the park ride way too fast!!! Central park is not a race track....
The small building and process of renting bike were conjested. Stop the desk briefly and get bikers out if building.
Get voucher on online.. Cheaper. Enjoyed.