Lycka for a great job arranging the tour, Rich did a great job managing my group even though he would usually have had another guide to help him, and everything went smoothly.
I had gathered a group of 15 fellow cruise ship passengers the day before we arrived in the port of Puerto Princesa. On very short notice, I booked this tour and as the group grew larger, Lycka was able to find us another van to accommodate all 16 of us.
The tour went smoothly, the weather was great, and even though the park had over 1000 permits issued for the day, it wasn't too long of a wait. (The cruise ship passengers on the official and much more expensive tour did get priority over everyone else. Not completely fair but I suppose you need some benefit for the money!) But we just went over to the restaurant there at the pier with a really good Filippino buffet and had an early lunch while we waited.
I haven't gotten any complaints from the group and everyone has said that seeing the Subterranean River was well with the day long trip.