Morning, take a boat trip to spot the rare Irrawaddy dolphin, which is known to inhabit the area. You can also visit other nearby islands.
Afternoon, return to Pakse. On the way, cross Mekong ferry to visit the Pre-Angkorian, ruins of Wat Phu, one of Southeast Asia's most dramatically situated temples. Explore these Khmer ruins, perched atop a nearby hill, which is one of Lao World Heritage site recognized by UNESCO in 2001, this wonderful archeological site of Khmer civilization dated back to the 9-12th centuries.
The trip ends with the drop off at your address or airport in Pakse. End of the trip.