Pros:
Waveny park is a beautiful Fairfield County park. The stone walls weave throughout the course and add a distinctive CT aesthetic to the course. The baskets are in good condition and the tee pads are natural but mostly level. There are signs at each hole and multiple tees on most. Some signage aids in navigating the course. There is a sign and bulletin board for the course so it's easy for a first timer to find as long as you've read the directions on this site.
Cons:
Some tee pads have tree roots making any footwork potentially dangerous. The multiple tees don't add a ton of variety. Additional signage would aid in navigation. I don't think any maintenance has been done all season. Many holes are overgrown with knee to waist-high grass. A couple uprooted trees and broken tree limbs are in very precarious positions. Some garbage throughout the course. Barbed wire and prickly bushes are dangerous. The layout is another weak point, it's not a loop, and you have to walk back to the parking lot on the road with no designated walking path and CT drivers that drive too fast. Parking is on the opposite side of Lanham rd. Most holes are pretty forgettable, not a lot of creativity on this course. Baskets are hard to see from the tees, in large part due to the overgrowth. Some holes have WAY too many trees (esp. #2). Elevation is present but could be much better utilized. It's a shame that the open field holes have been scrapped.
Other Thoughts:
This course could be a 2.5 or a 3 rating easily with a little bit of regular maintenance (and there certainly is enough money in New Canaan to keep up a 12 hole disc golf course). Even so, I don't know why you would even bother with Waveny; Cranbury so close by and Veteran's Memorial in Bridgeport is a great alternative to Cranbury. My round here was probably the least enjoyable round I've ever played and some aspects of the course were outright dangerous.