Hi,
Glad to find this thread and know the general good feedbacks on CC. I personally like the atmosphere and decor in OPH, simple without being over-elaborate.
I've also booked a package in Sept this year. We managed to neg for free-flow beer and waiver of wine corkage, provided that we have min 25 tables and go for the deluxe menu.
We chose CC mainly because my fiance has a very good impression of the food there. Also most feedbacks from friends on the food are very positive. After attending over 30 wedding banquets in S'pore, I've found that hotel food generally tastes "plastic" and functional. My only positive experience was of Charming Garden (another Tunglok) at Orchid Copthorne in Dunearn Road, where they served really great stuff. Although the place was really cramped, I really enjoyed the dinner. :0)