The couple escaped Los Angeles on Friday for a getaway to the newly opened Breathless Punta Cana Resort & Spa.
Upon arriving, the couple – who are parents to Mason, 3, and Penelope, 1 – “took a walk on the beach and then went swimming at the resort’s swim-up bar,” an onlooker tells PEOPLE. “Kourtney wore a black one-piece bathing suit and mentioned in an interview that she was currently doing an ab contest with Khloé [Kardashian Odom] so they can get back in two-piece suits and wear crop tops to an upcoming Beyoncé concert.”
The president of the Dominican Republic, Danilo Medinan, as well as Deejay Rhiannon were also at the opening festivities.
Disick – who sipped a Corona – was overheard saying the couple were looking to expand their family, “I want an entire soccer team!” he said.
Later, the duo dined on lobster and filet mignon.