When you wish to go for an adventure tour of Vietnam, there are a few things you need to sort out. There is no better way of having a great time.
You need to align your travel schedule with the best weather periods of the year. Vietnam has quite a diverse weather pattern. The northern parts are known to be warm dry and sunny. But you can also expect cold nights, so you need to carry the right clothes for that. When the rainy season comes round, there are heavy downpours. The central regions are normally wet, with minimal dry spells and rain most of the year.
You need to be careful ho you store your valuables and money. There are normally safes in the hotels. If there is none, you need to leave the receptionist with these valuables. You need to also walk around with as little cash and jewelry as possible. They are not as flashy, and so flashiness will only attract trouble. You need to make a point of transacting in cash only. You should change your money to their currency, but only in smaller denominations. Credit cards only work in larger cities.
You should keep your dress code casual but conservative. Only a business lunch at a high-end restaurant may need you to wear formal. The clients you choose need to have diverse weather conditions in mind. You can get long jeans and warm coats for the chilly times. You then need to carry lightweight and fast drying clothes for those moments when it is hot and humid. If you plan on trekking; you need to have proper hiking shoes. The beach areas are good for sandals and flip slops. You also need to keep it decent, as the local population is conservative.
You need to then invest in certain accessories. A good quality sunscreen is essential. It is also important to think of buying a wide-brimmed hat. You should invest in sunglasses that have a high UV protection setting. If you are out in the wild for long, you will need a bug repellent. You also need to have enough storage space on your cameras, for the photos you shall be taken of the wonderful sceneries along the way.
You also need to observe the local customs. You are expected to remove your shoes any time you go to a pagoda or temple, as well as when you visit a Vietnamese homestead. You also need to avoid revealing clothing. The accepted mode of greeting is a handshake. You also need to watch out, so you do not offend anyone by touching their head.
You will not find any guidelines for tipping. You will find eager reception and appreciation for it when you offer. This is a good practice when you go to a pagoda.