@Findyourdomain , I'm curious to hear about what your food was like, why you were disappointed.
I found VN food was less veg/fibre than I'm used to, plus I don't like white rice, white (rice) noodles or white bread. Wee problem, in that whole grain is almost not existent. On the plus side, many of our (on tour group) lunch meals were 6 courses (one course was fruit and one was rice, but rest were nearly always vegetable-full and wonderfully freshly made diverse dishes). And the fruit was amazing, dragon fruit, fresh pineapple, mango & star apples etc. Beer was $1 / can which kept the group happy.
The only medicore food we had was breakfast on the Halong Bay boat. Dinner on the boat had been nice, though. One hotel breakfast was also a little meh. I discovered a love of watermelon juice at other hotels.
My days in VN on work trip, we went to several Naice restaurants ... I liked this posh food less than the guided tour food, actually. Problem for me was a lot of pepper in the posh dishes, sometimes too strong for me. There was precisely one "weird" dish and only at one meal, which was jellyfish. But also at least 7 other things on the table at the same time so easy to ignore the jellyfish.