Is it advisable to visit the Mui ne sand dunes if I were visiting Ho Chi Minh from 1-4 Jan (4 days 3 nights)? What is the recommended route to get to Mui Ne sand dunes?
It's an 8-10 hour return trip! Not advisable for a day trip
You would have to sacrifice most of your time in HCMC to do this. On balance not worth it.
I love Mui ne (Ham tien) but it is a 4 hour train trip, plus taxi/ bus from either end, both ways. If you had 2-3 nights in Mui ne proper I would think it worth the effort but not for a night or possibly 2.