I think the metaphor works rather well.

Seen as treats by some, but seen as over-promoted junk by others.
Incredibly cheap when bought on offer.
Often given away for free as part of promotions.
Many BAEC members would happily ban both from "their" F cabin.

Leads us to the the slogan; "Kids and grown ups love it so, the happy world of BA First."

I appreciate being referred to as a "youngster", though. ^