Personally I would trade a tray of reheated gloop (yes, even in CW) for an on-time departure. I always travel with sufficient snacks to see me through 10 hours if needed, as invariably what is served on board is barely edible. Not a BA criticism, but airline food in general. Same goes for booze - at 35,000 feet you cant taste it properly anyway.
But I suspect I am in a small minority(!)