For a multi-country tour of Vietnam, Cambodia, and Thailand, pack lightweight, breathable clothing suitable for the tropical climate, comfortable walking shoes, swimwear, and a light jacket or sweater for cooler evenings. Essentials include sunscreen, insect repellent, a hat, sunglasses, and a reusable water bottle. Additionally, bring a travel adapter, a small first aid kit, and any necessary medications. Remember to pack modest clothing for temple visits in all three countries.

Visa requirements for those countries vary by nationality. Thailand offers visa-free entry or visas on arrival for many travelers. Cambodia provides an e-Visa system and visas on arrival at major entry points. Vietnam typically requires a visa, which can be obtained through the e-Visa system or a visa on arrival. Check the latest visa requirements for each country and ensure your passport is valid for at least six months beyond your travel dates.

Handling currency exchange and payments during this tour involves exchanging money at reputable exchange counters or using ATMs to withdraw local currency. Each country has its own currency (Vietnamese Dong, Cambodian Riel, and Thai Baht), so plan to carry some cash in each. Credit cards are widely accepted in major cities and tourist areas, but it’s advisable to have cash for small purchases and in rural areas. Notify your bank of your travel plans to avoid any issues with card usage.