Originally Posted by
MADPhil
You can't use the APC kiosks on your first visit with ESTA and they are not yet a family.
It's not a requirement to be married, a family or even co-habitants for CBP to consider two people to be considered one party for customs declaration purposes. For example, some people have been busted for failing to declare more than US$10,000 on entry to or exit from the US because the members of a travel party have in total more than US$10,000 divided amongst them.