Enjoy a relaxed seafood dinner or Vietnamese hotpot by the river; many places open until 22:00pm. If it's a weekend, check for Dragon Bridge fire show (Sat/Sun 9:00pm).
Take the cable car up to Ba Na Hills and visit the Golden Bridge, French village and gardens; park typically open 7:00am–17:30pm and is a full-day attraction.
Get measured for a tailor-made garment (1–2 day turnaround) or take a short boat ride on the Thu Bồn River; tailors open 8:30am–20:30pm and boat operators mid-morning to evening.
See the world’s largest collection of Cham artifacts; museum hours are typically 8:00am–17:30pm and it provides essential context for Central Vietnamese history.
If you prefer land attractions, visit Vinpearl Safari or VinWonders (open ~9:00am–18:00pm); allocate a half-day if interested in wildlife or theme park fun.
If you returned to Ho Chi Minh, have a final dinner in District 1 and prepare for your onward travel; otherwise ensure you are on time for international connections.