Ulu Temburong National Park in Brunei offers an immersive rainforest experience, primarily accessible via guided tour packages that include speedboat and traditional longboat transfers from Bandar Seri Begawan; independent travel is generally not feasible or permitted due to logistics and required permits. While open year-round, the rainy season (November-March) can impact river levels but also enhances the forest's lushness. A typical visit spans one long day or an overnight stay (2 days/1 night), with costs generally starting from a few hundred USD per person, covering transport, guides, meals, and sometimes accommodation at the Ulu Ulu Resort. Visitors should expect moderate physical activity for jungle treks and the canopy walkway, requiring good mobility, comfortable shoes, and insect repellent for this unique ecological adventure.