I'm always delighted to hear 4 yr old DGS use the good manners DD has taught him. This is something that was instilled in her at a very early age.
DD also makes sure the family sit at the dining table together to eat. SIL found this an alien concept when they were first together. He soon learnt to conform
Unfortunately he still cannot be relied on to stick to the regular bed time routine when DD is not around. This is also something she was brought up with.
I can't think of anything DD does that's different to how I did things.
To obliterate your address on packaging