This is a promo image for Couples Retreat (2009). Indeed, the muscular guy in the blue banana hammock is Carlos Ponce, Sen. Marco Rubio's brother-in-law. He's married to Rubio's sister.
From the book The Rise of Marco Rubio out June 19:
"In the forgettable 2009 film Couples Retreat, Ponce is the actor who steals one of the few funny scenes, portraying a buffed yoga instruct who makes the husbands jealous by performing sexually suggestive moves with their wives."
See here for Ponce's other acting roles. The only notable ones are from Beverley Hills, 90210 and 7th Heaven.