What's prompted this is that we went out for a special dinner on Friday night. Gastro type pub, a little posher than your standard pub grub. Place was fairly busy, and it's the first time we had visited. Our evening was very nearly ruined by the family at the next table - child of around 6 or 7 playing on his tablet with the volume on very loud. Parents ignoring him and clearly not giving a shit that everyone else could hear the annoying twiddly music. When I felt like my head was about to explode with the noise I asked the waitress if we could move to a quieter table - she moved us to the other side of the pub which was blissfully quiet.
I totally get that kids can get bored in a pub/restaurant if they're hanging around for too long after they've eaten, but AIBU to expect that the parents should care about whether their child is ruining a meal out for others around them? Buy the kid some earphones FFS.