It reminds me of Disney Quest. Technology is advancing at a tremendous rate and Disney are not matching (or even trying to) it. The last time I was in Future World (two years ago) there wasn't even WiFi!? Maybe Disney should change the theme? Or get a company like Apple to sponsor Future World...
With the dining plan you don't have anything to worry about. With breakfast just use your refillable mug, you are also entitled to a bottled drink. Just take a bottle of water each and bring them with you. You won't go hungry with the dining plan.
I know this is old so apologies! Although most people have SmartPhones you're forgetting about WiFi. Guests from abroad do not exactly use roaming as there is a high fee. It has been two years since my last visit (I'll be there again in October/November) and the level of WiFi was simply...