Rings, depends what you mean really. We have been 4 times in Jan.
Pro's: Cheaper, cooler, quieter, no lines
Cons: Rehabs, can be chilly in the morning/evenings
Personally as someone without kids this suits us to go out of season. Some of the major rides might be in rehab in the slow season but hey thats a minor detail. We save big bucks and dont have to queue for anything. It can be chilly on occasions so a light jacket might be required but its usually 60-70's.
We love it and wouldn't change.