Full-day Navua River adventure operated by River Tubing Fiji — a local family-owned business based in Navua town. 1hr 20min longboat ride up the Navua River through deep gorges, cascading waterfalls, and highland rainforest; a Namosi Highlands village visit; plantation walk; waterfall swim; riverside Fijian lunch; then ~6km tubing downstream over gentle rapids. Hotel pickup included (rates vary by pickup location). Age limit for tubing: 6+ years. About 5.5 hours of activity time.