Yes, you can get all three tiers for one credit per person. We are doing it on December 15th at Teppan Edo. At least that is how it is for 2007.
I'm not sure what you mean by the last question. I booked the first day CP packages could be booked...I think that was in August sometime for December but I could be wrong. We already had Teppan Edo booked for that night since 180 days, we just called and switched it to the CP package. Then we just waited to hear who our presenter would be...which has since changed in the past week or so.