I was on a HYD-BOM flight couple months back, upper deck on a 747 that operates JED-HYD-BOM sector; and got chatting to the very friendly (and senior) purser.

We hit a good rapport and I mentioned that none of the A320s on the route receive as good a meal service as the one provided here (multiple drink refills and eat as much as you like). He chuckled, before sidemouthing to me "Of course they won't do this, its an IC aircraft and an IC crew!"

Lol !