You Do Need power plug adapter while traveling from Western Sahara to Abu Dhabi.

Here is Why You Need An Adapter

The outlet and plug type used in Abu Dhabi is G and in Western Sahara are C and E. This is how they look like.

Western Sahara

In Western Sahara, outlets of type C and E are in use.

Type C

Type E

Abu Dhabi

In Abu Dhabi, outlets of type G are in use.

Type G