For online booking confirmation email, do we need to print out or can we just show the screenshot to immigration staff?
TLDR : Answer Summary
The consensus from the comments suggests that while some believe a screenshot might be sufficient, it is safer to print out your online booking confirmation when dealing with immigration. One commenter explicitly mentioned being instructed to print their screenshot at Chaengwattana, indicating a potential requirement for physical documentation. Overall, printing the confirmation is advised to avoid any issues.