You Do Need power plug adapter while traveling from Ireland (Eire) to Uruguay.

Here is Why You Need An Adapter

The outlet and plug type used in Uruguay are C, F and L and in Ireland (Eire) is G. This is how they look like.

Ireland (Eire)

In Ireland (Eire), outlets of type G are in use.

Type G

Uruguay

In Uruguay, outlets of type C, F and L are in use.

Type C

Type F

Type L