Is there a way to remove the Alt Tags from the Menu?
All that happens is it hovers and displays what the text already reads.
Yes you can. As you know all the views in the plugins are open to modifications, so you can easily edit them by removing the "alt" tags from the images and the "title" tag from the links. You can find the views for the Mega Menu in Plugins/SevenSpikes.Nop.Plugins.MegaMenu/Views/MegaMenu .
For the infinite category template please edit the CategoryMenuTemplate.InfiniteCategories.cshtml file and remove all "title" attributes within the <a> elements.
For the categories in grid with pictures, please edit the CategoryMenuTemplate.WithPictures.cshtml and remove all the "alt" attributes within the <img> elements.
If you need any further help, please let us know!