You can greet them by saying “Hello” Vietnamese “Xin Chao”
If you want to make a good impression when you meet someone for the first time, a good topic to discuss is family. Vietnamese appreciate it if you ask them about their marital status (i.e. single or married) about their parents, their spouses, and their children. It means that you care about their lives.
Thank you: Cam on
Local Currency is Vietnamese Dong(VND): Exchange at Airport they offer the best price, 100 USD is roughly 21 Lakh VND. Don’t forget to bring USD along with you.
You can use International credit cards as these are widely accepted.
If you are non-vegetarian then you can easily survive as Vietnamese serves the lot of red meat, chicken ( a), duck, fish etc.
For Vegetarian I must say sorry. It’s very difficult to find Indian food in Hanoi, However, there are few restaurants which Indian food which is near To Ngoc Van, Hanoi. There is one restaurant which is very famous “Namaste Hanoi”
KFC is also available, Local Street is full of Hot dog options and you can eat full Pineapple for just INR 30 (10,000 VND)
A lot of Burger restaurant is there in Hanoi, Beer and Cold drink are cheaper than in India.
90 % of Vietnamese don’t understand English and speak English, Taxi Driver speaks little English and those in hospitality business can speak. But you can take help of google translator and also take help of small Vietnamese kids they speak good English and understand well. Vietnamese use smartphone more than us so doesn’t forget to use Google translator.
Taxi drivers don’t cheat they usually take you to your place by the shortest route so don’t worry and secondly metered taxis are available so don’t bargain, the price is usually INR 30/ KM. Motorbike taxis are also available but you have to confirm price first. Local Transport in Hanoi is very difficult due to heavy traffic.
Place worth Visit
Visiting Vietnam is a great experience. Most famous place in Vietnam is Ho lang bay, Which is near to Hanoi city(200 KM). This place is in list of world heritage places. Spend a night in Sea cruise is which not much costly 80 USD to 150 USD for three stars to 4-star cruise. If book cruise then they offer free Pick and drop(Small Buses) from Hanoi city.
Don’t miss this place, Vietnam visit is waste if you are coming back without visiting this place.
Second place is Hanoi which is Capital city of Vietnam, you can visit HoTay lake, Ho Chi Minh Museum, You must visit a local night market near Old Quarter where you may find a lot of option for Vietnamese sovereigns. Bach Ma, honoring a legendary horse, plus Đồng Xuân Market, selling household goods and street food.
Third Place is Sea beach near Hai Phong city, but please note this city is famous flesh trade, so avoid visit in city area as many touts may approach you.
Fourth place is Da Nang which again coastal city but far from Hanoi.
More info: Vietnam Tourist visa for Indian passport
Enjoy Visa Vietnam Company.