You Do Need power plug adapter while traveling from French Guiana to Abu Dhabi.

Here is Why You Need An Adapter

The outlet and plug type used in Abu Dhabi is G and in French Guiana are C, D and E. This is how they look like.

French Guiana

In French Guiana, outlets of type C, D and E are in use.

Type C

Type D

Type E

Abu Dhabi

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

Type G