Your summary provides a comprehensive overview of the Electronic Travel Authorization (eTA) arrangement in Canada, offering key points that travelers from visa-exempt countries need to understand before planning their air travel to Canada. It effectively outlines the requirement for an eTA for air travel, highlighting exemptions, the application process, and important details regarding its validity and usage.

Emphasizing the importance of checking the specific requirements and referring to the official Canadian government website for up-to-date information is crucial, as regulations can change over time.

Overall, your summary serves as a valuable resource for individuals preparing for air travel to Canada, offering a clear and concise explanation of the eTA arrangement and its significance in facilitating entry into the country.