Travel advice while visiting Vietnam - Phu Quoc Travel guide, Phu Quoc tips, Phu Quoc travel advisor

Take a hotel business card from the reception desk before venturing out from your hotel. This will make your return to the hotel in a taxi much easier.
Carry a roll of toilet paper in your daypack on long excursions from your hotel. You never know when you might need it!
If invited into a home, always remove your shoes at the front door when entering.
Ask for permission when taking a photograph of someone, particularly in minority areas. If they indicate that they do not want you to, then abide by their wishes. DO NOT offer money or push the issue. Never take video cameras into an ethnic minority village. They are considered to be too intrusive by the local people.
Do not try to take photographs of military installations or anything to do with the military. This can be seen as a breach of national security.
Drink plenty of bottled water, particularly during the summer months. If you are not used to travelling in a tropical climate such as Vietnam you may not notice the dehydration (darker urine is a sign of dehydration). If you drink tea, coffee & alcohol you should increase you water intake accordingly as these will dehydrate you more.
Avoid giving the following items to local people when trekking through ethnic minority villages:
Empty water bottles, since you cannot guarantee that the empty bottles will be disposed of in a correct manner and sometimes these are recycled and sold.
Sweets and candy, since people have very limited access to dental health.
Pens to the local people. If you want to give pens, ask your guide to introduce you to the local teacher and donate them to the whole community.
Do not offer money directly to minority people, instead donate to a local charity
Never sleep or sit with the soles of your feet pointing towards the family altar when in someone’s house.
Never lose your temper in public or when bargaining for a purchase. This is considered a serious loss of face for both parties. Always maintain a cool and happy demeanor and you will be reciprocated with the same.
It's in your best interests not to drink the tap water, especially after flooding!
Avoid cyclo ride after dark.
When crossing the road, especially in Ho Chi Minh city, always keep looking to the left and right and walk slowly!