GA’s for 211 in YYC were tagging today. Announcement from SD on flight: you’ll notice that you may have had your carry on baggage tagged today so that we can ensure there’s adequate space on the aircraft for all approved carry on.” Or something to to that effect.
Nice to see.
Edit: second announcement says that bags have been tagged as “under seat” bags to allow more room...... she may have said that the first time but I heard it this time.