Yes, you must fill out an Arrival Card while entering Laos. It is a necessity for all travelers, regardless of country, visa type, or place of entry.

Here are some reasons why filling out your Arrival Card is important:

Immigration: Arrival cards help immigration officials track your arrival and departure from Laos. This includes essential information about you and your visit, including passport information, arrival date, flight information, visa type, length of stay, and accommodation details.
Security: The information on your entry card can also be used for security purposes, such as identifying potential risks or tracking individuals who have exceeded their visa period.
Streamlined Entry: With arrival cards filled out and readily available, the immigration process on arrival in Laos can be processed fairly quickly. This means less time waiting in line and more time to enjoy the trip!

When flying internationally, you must fill out and produce Arrival/Departure paperwork at the immigration desk.

Arrival – Departure Declaration forms are available at Laos international airports before traveling to immigration counters for departures from Laos international airports. When you arrive in Laos, you will be given the paperwork at the check-in desk or by cabin staff during the trip.