- Age: 12 years and older - Physical condition: Good health; not suitable for people with cardiovascular, respiratory, or severe bone and joint diseases - Personal clothing & equipment: 01-02 sets of long, quick-drying pants; pajamas; swimsuits; 2 pairs of high socks; sandals/flip flops; medium-sized backpack; hat, glasses, sunscreen, insect repellent, personal hygiene items. Dry bags and trekking shoes are not required but recommended. - Experience: No trekking or cave swimming experience required, but average physical strength is required to walk 15km and swim 500m (optional) - Safety & companionship: Bilingual English-Vietnamese tour guide, safety assistant and service staff accompany the entire journey - Additional notes: The journey includes adventure activities: zipline, water jumping, waterfall sliding, 115m rope swing. Each guest is supported to send 03kg of luggage to the porter. There are free shoes to borrow (size 37-45), but you should bring your own shoes to fit your feet.

- 100% refund: cancel before 168 hours (07 days) - 50% refund: cancel before 72 hours - 168 hours (3 - 7 days) - No refund: cancel within 72 hours (3 days) before departure date - Reschedule: supported if notified 07 days in advance, depending on availability

- Under 12 years old: Not allowed to participate - Over 12 years old: Calculated as adults