I can only speak about the Inventions NY dinner that we attended, as you have seen from the photo's the food was fabulous - I still have the menu somewhere I'm sure if anyone wants a photocopy. We paid £70 per head per adult then Lois ate free because of an early booking deal and Callie was free because she was only 2 1/2.
The food is laid out and you serve yourself buffet style, your waitress clears your plates and serves your drinks: water, wine and kids drinks were included in the price as was a glass of champagne to finish.
Was it worth the money ? You could get a lot of counter service food for £150 but not anywhere near the standard of that buffet.
We went over NYE to join in with whatever events were on offer and with the same view as Tracey - you only live once. I think we would have felt left out leaving the hotel to eat when the majority had booked dinner.
Alec