On the one flight I took it, I was the only one going all the way. Flight was pretty full departing HNL (maybe 90%), emptied out to around 50-60% by KWA-KSA, back up to 100% and overbooked for TKK-GUM

As a side point, a SYD/MEL-LAX fare allows routing via the Island Hopper, so my final routing was something like LAX-ITO-HNL-GUM-CNS-SYD, with the last leg on either VA or QF (but must book into the lowest buckets, so finding availability on the Australian domestic legs that time well with the Island Hopper was tricky). Of course with GUM-CNS going, this will soon become history