Like some, I always eat before take-off and take my own food. I always have nuts with me too. Twice I have, on 4 hour flights, only taken nuts and been told that as someone on board has a nut allergy, no-one is allowed to have any sort of nuts and they won't be selling them. How annoying is that! I wish they could find some way of telling everyone before they board that nuts are forbidden. I was stuck then with nothing so bought a tube of pringles at vastly inflated prices, too salty, too much msg and too much fat whilst never enough in the box. Nuts on airlines isn't always the answer.