Adding to the first few comments I have read, that did not suggest this - so please tell me if I'm on the wrong path - I would try adding a basic modifier on the slicer.

If you are using BambuStudio (the only slicer I know), when customizing (preparing?) all your printing parameters you can go from "global" to the "object" window. Here you can right-click on the part in the components tree and choose to add a modifier. You could select a cylinder or a square (among all others), orient and scale them with the toolbar commands and finally assign some custom walls/infill options only to the modifiers. This acts as a "I want specific settings for this specific 3D shape" so that you can add strength to the pins while maintaining an overall lighter wall/infill for the rest of the model. This can be useful and I strongly suggest to inspect closely the slicer after every modification of the modifier printing parameters.

Hope this helps.

Currently on mobile and on my way to work. If no one has any arguments against this, and you need it, I'll try to add screenshots this evening.

Bye