The main draw is the ability to use Illustrator on any PC without installation. However, portable versions are known for being less stable and may crash when handling large files or complex effects.
Support for OpenType variable fonts, allowing you to adjust weight, width, and slant using sliders. Review: The "Portable" Experience portable-adobe-illustrator-cc-2018-full-version-kuyhaa
To keep the file size small, portable versions often strip out "unnecessary" files, which can lead to missing plugins, help files, or cloud integration features. The main draw is the ability to use
