TC, Thomson changed their system some years ago, giving people the option to opt out of the in flight meal if desired.
I always use Thomson and have never had a problem with this. It does give you more choice.
This is only a personal opinion, but I would never advise all inclusive. The drinks are like coloured water, and the food is usually as bad. I only tried once and will never do it again. I only holiday bed and breakfast now. Have had enough of hotel food, and much more choice when it comes to the evening meal.