If you start from Arwana you will see a picture which reminds an easy and comfortable footpath in the park
This is the best formed trail in recent years runs from the western side of Arwana Resort.
This is a reasonably easy walk with only a few steep slopes and can be done in flip-flops or other light footwear although better shoes are always a good idea. The first 10 minutes behind the beach is a trifle hot but once you hit the jungle area there is plenty of shade. After another 10 minutes of mostly not too steep climbing over a low saddle you reach a downgrade where the track splits - for PIR lovely beach (5 minutes) take the right branch which dives downhill to some squarish metal water towers and then past some of PIR A-frame hillside bungalows to emerge beachside near the pier.
To get to Mama's take the left branch which then loops left slightly uphill and continues past the back of Coral View Resort to descend to the rear of the very last huts on the southern end of Mama's - 10 minutes from the junction. By the condition of the track, few people use this section - it is much nicer taking the coastal route between PIR and Mama's.