Platinum and Pearl get a free Palo meal, but no discounts at either restaurant.No wine - actually quite the opposite, we each got a mocktail.The menu option my DH went with was $205 alone. Just really glad we knew in advance we'd be served the dinner menu so we had time to review the menu and determine if we'd go through with it!
As far as the 'nominal charge' I know from reading these boards that certain Castaway Club members (Pearl? idk) get specialty meals at discounted prices, so maybe you're referring to that? But we don't cruise much so I can't speak to that.