On a TATL CW flight recently, I was wandering around the cabin as I was a bit restless, and it struck me that the differences between the cabin classes could quite easily be represented by restaurants. This is how I see it, but feel free to add your own interpretation.

WT is The Harvester.

Perfectly acceptable for a last minute decision, if you need a meal in a hurry. Service is going to be fine, and the food will be OK. Granted there will be kids screaming under your table, trying to colour in your toes as you eat your chicken, but everything is forgiven when you see the bill. Might cost a bit more than McDonalds, but hey, at least you're eating with cutlery.

WTP is Jamie's Italian.

Ultimately it's The Harvester with less people and a few bread sticks. Still, if you're planning on having a relaxing meal then it's worth paying the extra for a less hectic ambience, and better quality chicken. You can also order bubbles without them having to send someone out to the off licence for a bottle of Cava; as would be the case at Harvester.

CW is The Kitchin.

Most people will look at you a little confused when you say you're eating at The Kitchin. Very few people will have eaten there, but most have an unrealistic expectation of dining in a restaurant of this calibre at least once; despite the fact they've only paid for the Harvester.
Modern and British, the food offering is tasty, but (like the wine list) won't alienate those unfamiliar with higher-end dining. The restaurant itself is fairly minimalist, with touches of the traditional thrown in, making it a luxury, typically British experience. The bill will divide opinion. Some will consider it excellent value, whilst others will baulk at the sight of it, commenting that they could eat 10 times at the Harvester for the same amount.

F is The Fat Duck

99.9% of people will not have eaten here, but everyone will have heard of it. Widely regarded as the best high-end restaurant in the UK, and plenty of people would give a limb to experience dining there. The clientèle is a totally mixed bag, from high-powered businessmen to celebrities, to competition winners not quite believing their luck. Expensive, exclusive, and of the highest quality, it has the power to create envy in people and even the most indifferent clients can't help but be swept up by the pageantry of it. It's not going to be to everyone's taste, and the bill will be well out of the reach of the average man, but that doesn't change the fact that pretty much everyone dreams of trying it; although probably just the one time.
So, if you are a frequent Fat Duck diner, just take a moment to think about the privileged position you're in just by being sat in that chair. Now, if only they'd close the bloody curtains so you can enjoy your dinner in peace.