Hi. im traveling to vietnam for my first time, in a few weeks.

Hi. im traveling to vietnam for my first time, in a few weeks.im traveling for some weddings, but have booked extra time to see the country. so far, i have planned to land in HCMC, then leave from Hanoi. QL4C is high on the list and then its easy to lump in the glass bridge (with activities) and fansipan, since they are nearby. ha long bay is also worth a visit, but i think a day trip would be enough, since i dont like to sit still on a boat for “forever”.that being said; i have 5 days between the two weddings in HCMC that im unsure of what to do with. i was thinking about Hue, da nang and/or hoi an, but i also wanted to ask if any locals or well known, knew any other places to go, in stead of just going to the same places as every other tourist.