While we didn't get the Go card we did go to PCC and did the Ali'i luau. This was the one thing I was disappointed in. PCC is fine, it is kind of weird in that each "island" is pretty dead when there isn't a presentation going on. There are a few people around doing things, but at times it felt like the area was closed, it is just very quiet and odd feeling. When they have their scheduled presentation everything kind of comes to life, but then it becomes very crowded.
The luau was nothing special. The annoying thing is that the regular one is at 4PM which is too early to eat dinner for me. Everyone was so bored by the end that no one wanted to stay until 7:30 for the night show to start (which is the only thing I really wanted to see).
If I were to do it again I would opt for the regular island buffet dinner (which is ~$90) so we could eat later and not have to wait around for the night show.