iPhotos on MacBook Pro

Okay, so I know a swanky new version is coming out.

My question is this - moving from windows where all family photos (10000's) were in folders and sub folders, I am reluctant to put into iPhoto as it undoes the sub folders making more work to re album them.

So am currently just moving a folder of holidays in and geotagging. Gosh, that is so hard, when camera not set, or scanned photos taken moons ago...in that little tinsy map down the bottom of the iPhoto screen.

Have done two folders thus far. In Windows I also tagged them and use a software program that allows the tags to come over as well which is excellent. Question - if I move this folder or duplicate back to my Picture Album on my desktop (as a folder) will it keep the geotagging? Or am I best to leave in iPhoto's?

I find Apple excellent, but hard work coming from Windows person for many years, and added problem with major health issues.

It's hard to find the right information......

Any ideas please? All welcome....Thanks

Belinda😕