Is the 90 day visa the most common choice?
For long-stay travelers, yes, it is one of the most common choices.
The 90 day visa is a common long-stay option for travelers doing a visa run from Da Nang. This page explains why people choose it, what changes in the process, and where mistakes usually happen.
The route itself is the same as a normal Da Nang visa run. You leave Da Nang early, reach Lao Bao, exit Vietnam, send the exit stamp, wait for the new visa, then re-enter Vietnam.
The important part is the visa preparation. The passport details, intended visa type, and timing all need to match correctly before re-entry.
This option is usually best for travelers who know they will stay longer in Vietnam and want fewer resets. If you want a longer legal stay and more stability, the 90 day option is usually the smarter route.
For long-stay travelers, yes, it is one of the most common choices.
Often yes, if the case is prepared properly and timing stays normal.
Correct details before travel and fast handling after exit at Lao Bao.