I do wonder how well it will work, because it will get to a point where no one will pay for it,
I don't know how many people are MAP holders are in the parks, but I have seen enough lanyards per day to think it is quite high (considering most MAP users don't go arround with lanyards)
and how many of the regular users will buy food?
at that cost, it is practically buying a ticket at this point and it is far cheaper to stop off at the lidl/aldi in uttoxiter on the way in and pick up a sandwitch and packet of crisps.
and for the park guests, they may buy it once, or during scarefest but at these prices it isn't difficult to learn that the prices are insane and tell people who you may know are going to bring a pack lunch, I tell everyone I know to bring one, or stop off at lidl in uttoxiter (their bakery section is nice)