You Do Need power plug adapter while traveling from Bonaire to Ecuador.

Here is Why You Need An Adapter

The outlet and plug type used in Ecuador are A and B and in Bonaire are A and C. This is how they look like.

Bonaire

In Bonaire, outlets of type A and C are in use.

Type A

Type C

Ecuador

In Ecuador, outlets of type A and B are in use.

Type A

Type B