We thought it was worth it when we did it. At the time, we had a pre-teen & a teen , both boys, both eating machines, with us. Our teen certainly ate our monies worth, esp. on sushi night!
The concierge staff encourages you to stock up on sodas & waters etc.... They even got ginger ale for me, which wasn't available, otherwise... They arranged alot of things for us, we needed some special things because of health issues - It really made for a very easy, worry free trip. The pre-teen who was with us was a picky eater, but he still was able to find things to eat.