If cost is a concern, Palm Beach is running a promo with a local bank's credit card till 31 May - spend at least S$150 and get S$60 off the total bill. That adds up to be ~40% discount. And the restaurant is right across the street from NSB, I believe.

One problem though, NSB is known for White Pepper Crab and PB is known for its Black Pepper Crab. Not sure if OP was referring to the black or the white version.

By the way, MOST restaurants will partner with local bank credit cards to offer 10% discount on ala carte food items. You just have to bring the right person with the right card for each restaurant. And you MIGHT be able to save the $20 and buy the group some Tiger.