Matthew and Camila Take on Rio

(Photo: Splash Photo Agency) New parents Matthew McConaughey and Camila Alves indulged in some adult fun over the weekend when they jetted to Alves' native Brazil for the infamous Carnival festivities.

After relaxing on the balcony of their hotel room overlooking the famed Ipanema beach, the couple took a barefoot stroll on Sunday afternoon among the crowded masses.

"They got a lot of attention but most people left them alone," a source tells Radaronline.com. "They were walking hand-in-hand and were just really low-key, very mellow."