If you want to reduce the file size and improve the performance of your InDesign document, there are some tips and tricks you can use to optimize your vector files. For example, you can remove any unnecessary or hidden elements from your Illustrator file, such as unused layers, swatches, symbols, or brushes. You can also simplify or expand complex or editable elements, like paths, shapes, text, or effects. Additionally, it's best to use global or process colors instead of spot colors unless you need them for a specific purpose. The Object > Rasterize command can be used to convert some vector graphics to bitmap images if they have a lot of details or effects that might not print well or increase the file size. You can also use the Object > Flatten Transparency command to merge overlapping or transparent elements into a single object. Finally, the File > Package command can be used to collect all linked graphics and fonts into a single folder and generate a report of any potential problems or errors.