The below planning is for a trip from Bangalore to Hanoi, however most points can be reused for a trip from anywhere in India.
Trip Itinerary – 1) Make a rough itinerary of places you would like to cover and the must sees, use recent YouTube videos to help here. 2) Once this is done, estimate number of days needed at each location, take into consideration travel time between destinations if you are covering multiple locations. 3) Keep in mind everyone’s interest and general health conditions are different, a single itinerary doesn’t fit all. 4) Research on areas, modes of transport between locations, food etc. The more you know, the better. A few Vietnamese words really helped. 5) Once a rough itinerary is made, use any online tour agency to refine the itinerary free of charge. Look for the ones that offers to accommodate changes and customisations. Also find one which fits your budget. I used designer journeys where you don’t pay until the entire itinerary is prepared to the last dot. Go for multiple edits here, ask for changes, ask for different modes of transport, the earlier research will help here. You can then decide if you want to pay or do the trip on your own using the above plan. 6) Keep some time for yourself in the itinerary. It becomes very hectic if entire trip is working on a schedule. So in my itinerary, I had all hotels, transfers between locations and just 2 day activities booked through designer journeys, rest all was planned separately.
Flight booking – 1) Book flights atleast 2-3 months in advance to get the best pricing, do different commutations and permutations if you are not particular about which date to travel. Indigo and AirAsia seems to have the least transfer time and lowest pricing. Costing from BLR to HAN is anywhere between 10k-16k one way, round trip could make it lower. 2) Not all flights run on every day, find the days where the transfer time is significantly less.
Visa – 1) Get evisa worth $25 by applying directly. Pretty straightforward site, you would need to provide approx travel dates so by now you should have made some plans around the date. 2) You can book flight first and then apply for evisa or the other way round, visa is got in 3-4 working days, they usually give a few days extra.
Passport – Valid password with atleast 6 months until expiry is needed.
Vaccination certificate – download the international travel copy from cowin before travel.
Cards and Cash – 1) If you are planning to carry cash, take USD, many places including airport offer money exchange to VND (Vietnamese dongs). 2) Load 1 or 2 cards with sufficient money. I had taken a forex card from bookmyforex and I had a Niyo card for backup, get this Niyo Card, very helpful. 3) Most places accept only VND so better to have sufficient amount in hand. 4) ATMs charge transaction charges, so pull out sufficient money for atleast 2-3 days in one go. Few banks charge more, I had used agribank ATMs that charged 22000 VND per transaction ~RS 70 5) Learn the different denominations and the conversions. VND by 300 is approx equivalent to value in rupees.
Weather – Research the weather and take ideal clothing. We had carried sweaters, ponchos and umbrella none of which we had to use. It drizzled on just one day and it was not cold enough to wear a sweater. Weather is also unpredictable, so make your best guesses here.
Mobile Sim – Sim is available for purchase at the airport with different plans. Took Viettel, which had excellent network coverage throughout. Excellent internet services. Most places like cafes, hotels, restuarants, provide free wifi.