BangBangNeko, it's in our contract with the hotel that "No food or beverages may be brought into the hotel by [us] for service at [Kcon]", which basically means no food at all, unless the hotel provides it at their ridiculously exorbitant prices.
Ask me about this again later, because you might remember that Nekopan Bakery went through significant lengths to sell prepackaged food with the permission of the Hilton last year, and later I might be able to help you hash out the details with the hotel, so it's entirely possible that one might be able to provide food as long as the hotel feels comfortable with the providers' health and safety credentials, and that they believe the food we're bringing in is something the hotel could never provide, thus we aren't competing with the hotel.