Hi,
You wont eat enough bagels or drink enough soda to cover the extra cost.
You have to decide if you think it is worth it for the exclusive check in, secure floor, turndown service, comfortable lounge, daily breakfast, daily snacks and drinks, afternoon hot & cold appetizers, evening desserts & cordials & the services of an itinerary planner.
To me it is well worth it ~ if you are touring the parks commando style and plan to be out all the time then you may want to skip concierge.
The appetizers are light ~ not enough for dinner, you would still need to purchase a dinner. On days we had a late lunch, like at 3:30pm etc... the evening appetizers and desserts were perfect, but this is not a way to save money - it is still less expensive to stay non concierge and buy your meals.
Good Luck deciding,
>>^..^<<