You Do Need power plug adapter while traveling from North Macedonia to Saint Lucia.

Here is Why You Need An Adapter

The outlet and plug type used in Saint Lucia is G and in North Macedonia are C and F. This is how they look like.

North Macedonia

In North Macedonia, outlets of type C and F are in use.

Type C

Type F

Saint Lucia

In Saint Lucia, outlets of type G are in use.

Type G