You Do Need power plug adapter while traveling from Pitcairn Islands to Falkland Islands.

Here is Why You Need An Adapter

The outlet and plug type used in Falkland Islands is G and in Pitcairn Islands is I. This is how they look like.

In Pitcairn Islands, outlets of type I are in use.

Type I

In Falkland Islands, outlets of type G are in use.

Type G

I am from

going to