In 2009 I was travelling with my wife, daughter and maid (I was alone on a PNR, wife/daughter on another PNR, maid on a 3rd). I had reached some milestone (I don't remember what) and they wanted to upgrade me. I said what's the point in upgrading me alone without my family? Check in agent made a phone call, said they would upgrade wife as well. I asked what I was supposed to do with my 2 year old daughter. They said they don't upgrade kids and she can stay with the maid.

In the end I declined both upgrades and we all travelled in Y.