1. Check the latest travel advice for your destination and subscribe to receive free e-mail notification each time the travel advice for your destination is updated.
2. Take out appropriate travel insurance to cover hospital treatment, medical evacuation and any activities, including adventure sports, in which you plan to participate.
3. Before travelling (particularly travelling overseas), register your travel and contact details online or at the local Vietnamese Embassy, high commission or consulate once you arrive, so we can contact you when in need.
4. Obey the law. Consular assistance cannot override local laws, even where local laws appear harsh or unjust by Australian standards.
5. Check to see if you require visas for the country or countries you are visiting or transiting. Be aware that a visa does not guarantee entry.
6. Make copies of your passport details, insurance policy, travellers cheques, visas and credit card numbers. Carry one copy in a separate place to the originals and leave a copy with someone at home.
7. Check with health professionals for information on recommended vaccinations or other precautions and find out about overseas laws on travelling with medicines.
8. Make sure your passport has at least six months validity and carry additional copies of your passport photo with you in case you need a replacement passport while overseas.
9. Leave a copy of your travel itinerary with someone at home and keep in regular contact with friends and relatives while overseas.
10. Before departing your home check whether you are regarded as a national of the country you intend to visit. Research whether holding dual nationality has any implications for your travel.
11. Do register Visa on arrival to get your passport stamped in Vietnam airport. Details can be explained at viet nam visa online register

Yes, completing your documents is very important. I usually forget at least one important document but i have a mom alert ready for it.However, you can never be too careful and this check list will help. Thank you for sharing.