@Kimberly *******
it was just me getting the DTV. One of my kids has their Thai Citizenship and the other two kids (still need to get their Thai Citizenship setup) came in as Americans visiting their Mother. They have 1 year visas with re-entry permits. My wife is a Thai Citizen.
It does say this about DTV Dependents for the requirements at the Savannahket location:
“Spouse and dependent children:
Proof of relationship to the DTV visa holder, e.g. a copy of marriage certificate/ birth certificate/certificate of adoption”
Sorry I’m not able to clarify more than that.