Users highly appreciate the WordPress Mega Menu plugin for its ease of use, wide range of customization options, and ability to improve the visual appearance of menus. It enables smooth, intuitive setup and styling, making complex and lengthy menus more manageable and visually appealing on both desktop and mobile devices. Users also commend its compatibility with accessibility standards and its seamless integration into various themes and builders like Beaver Builder. However, some users find the initial configuration a bit challenging and express a desire for more streamlined versions or additional features. Overall, support responsiveness and update stability are praised, but a few users encounter minor functionality issues initially.