Much of Asia is relatively uncomplicated in this respect, and with bank systems modernising at such a phenomenal rate, it is set to become even easier.
Currencies:
Malaysia (& Malay Borneo) - Malay Ringgit, often abbreviated as ‘$’ (not US $!). Notes come in denominations of 1, 5, 10, 20, 50 and 100 ringgit.
Cambodia – Riel, abbreviated to ‘r’. Notes come in denominations of 100, 200, 500, 1000, 2000, 5000, 10,000, 20,000, 50,000 and 100,000, although the bigger notes are seldom seen.
Laos – Kip, abbreviated to ‘k’ and is available in 50k, 100k, 500k, 1000k, 2000k and 5000k notes.
Thailand – Baht, abbreviated to ‘B’, which is divided into 100 satang. Notes come in B10, B20, B50, B100, B500 and B1000 denominations.
Vietnam - đồng, usually abbreviated as ‘₫’ (occasionally ‘VND’). Notes come in denominations of 200₫, 500₫, 1000₫, 2000₫, 5000₫, 10,000₫, 20,000₫ and 50,000₫.
Yes you will, and they accept most international card groups (Visa, Cirrus, Maestro, etc). However, they may not accept your local bank’s withdrawal card. Check with your bank if you are unsure.
Malaysia (& Malay Borneo) - Machines found throughout both states. All pay out in Malay Ringgit.
Cambodia - Minimal number of machines. These are to be found in Siem Reap and Phnom Penh only. The machines often pay out in US $. Laos - Several machines in Vientiane and at present just one in Luang Prabang.
Thailand - Machines to be found throughout the country in all major towns and cities.
Vietnam - Machines to be found throughout the country in all major towns and cities.
This will happen. Several of the currencies in question are ‘closed currencies’ which means they cannot be obtained outside the country itself. This is NOT a problem. You will be able to change your money upon arrival. It is advisable to carry some US $ with you, especially if arriving late at night.