Trail shoes are required, could be really slippery after the rain, but still manageable. We did the tour in 2h30m, 75 min each way. It’s going both uphill and downhill in both directions.
You need to pay a small entrance fee to the national park, and register yourself before leaving. Two cafeterias with limited food (if any) but plenty of drinks. Bus line 6 passed by just outside. Easy access to the starting point with public transportation.