Entry to BVI with Children (not vaccinated/too young to vaccinate).

They require neg test before entry as well as portal. They then require re-test on day 4 and need to stay in family bubble during that time, If I am understanding this correctly.

Pertaining to the children's day 4 test. Can this be done with a virtual proctored test like the Binax, or does it have to be done at a BVI testing facility? Anyone with any experience doing this?