Halle Berry & Olivier Martinez: Divorce and Vacations CAN Mix

Halle Berry and Olivier Martinez looked relaxed taking the latest Hollywood trend for a test drive ... vacationing with the kids and the soon-to-be ex.

The brood hit the beach in Puerto Vallarta with their 2-year-old son Maceo and Halle's 8-year-old daughter Nahla.

Olivier and Halle even got a little playful while lounging around but we're told they're definitely going through with a divorce ... the trip was strictly for the kids.