We really love CKC trials because the course design suits Kili a lot better. They tend to flow smoother, and there is more space between obstacles (18ft as opposed to 15ft in AAC) which gives Kili more space and time to turn her big body when she's going fast. It also means that she rarely has to bounce a jump. A bounce is when a dog doesn't have room between landing and taking off between two jumps. When the back feet land it is also the take off for the next jump. Kili regularly bounces jumps in AAC, but almost never in CKC.
This trial is held in conjunction with a large conformation, obedience, and rally show so it is a busy place. The agility arena is somewhat isolated from the majority of the madness, and I keep Kili mostly to the agility area since she doesn't like conformation and will sometimes get upset and shut down if she sees the tents. This year a sighthound club was hosting a conformation specialty, and they also sponsored a prize for the highest scoring sighthound in agility, which Kili won.