As of July 2019, the K6 bus route no longer exists but you can take the 3A bus from Kuching to get to Semenggoh. We did, and it dropped us off right at the entrance to the park. The ride took about an hour (left Kuching at 12:30pm, got to Semenggoh around 1:30pm) and cost RM 5 per person.

Not compulsory

A lot is dependent upon the child. Recognize that it will be hot and humid with walking required from the car park to the assembly area and probably deeper into the jungle. The trails in the jungle are uneven and it seemed like there was a mad rush from the 120 or so guests to get from one spot to another. The rangers request that guests be quiet so as to not spook the orangutans that might be coming for breakfast. We did not realize that time of year plays an important part in whether one appears. At the end of the fruiting season, the animals can get their fruit naturally and are less apt to come to "breakfast." We were there at the end of the fruiting season in late February/early March. I have no idea when it begins. That said, it was the highlight of our visit to Kuching.

Yes. There is parking in the reserve near the visitor centre and toilets are near the little shop and cafe close to the viewing area.

I was told it’s best to go for the morning feeding just when the park opens

Also know, non Malaysian residents pay a little more.

Open daily, including public holidays

yes we saw one, and a couple fhat went a few days after us saw 3!

semmongoh tijdens voedertijd heb je meeste kans. ze komen echter niet altijd. soms hebben ze geen zin en al genoeg voedsel zelf gevonden.

The staff is very strict about the opening hours, so no chance to enter the park more early and/or for your own. It is sufficient to arrive 1/4 hour before the official opening hours.