In the very beginning, due to the analog camera and film involved, we were not able to take so many travel photos during the trip (unless you are willing to take excessive film rock stock). Even for the very beginning for the digital camera, due to the storage limit, we remain face the same, so we end up with too few photos to work on or pick, as the result.
Then, we are in the too many travel photos scenario, 3 to 5 thousands or even more per trip for those long trips, the digital camera or smartphone just too handy to take photos, even up we are taking more than necessary, that is too many.
The solution to deal with it is all put into a centralized photo management solution, it must be network attached storage (NAS) based, since it is not possible to attach all the photos in an endpoint laptop or desktop due to storage issues. External hard disk will be project temporary storage, but not a good solution as NAS to have all photo proper sort by years and date, without lost of any pixel resolution, even we all know we will never used up all the high resolution for commercial print or what, but human nature, we prefer to keep the original.
I myself being abandon keep the raw file for some years already, in the very beginning, i have the habit to keep one, but really, I do not take photo for make living, how much time want to process the photo from the raw? recently I prefer to work direct from the output like jpeg, the most I done quick touch up with Lightroom, or something it can not do like what I want, then I edit in the Photoshop, mainly for the partial color enhancement or make the shoot by ultrawide len more naturally see by human eye by adjust the perspective.
Centralized index all photos, then quickly pick a few photos and then filter photos to work on based on that, helping me save a lot of the time to look at each photo one after another, I prefer to filter this way, so the result is to get more from the less. This process is work well to deal with huge volume of the photos, but apply over photos take in the past, I face the issue for very few or little I can pick, since most of them is taken during the period of time early of digital camera generation, the resolution not really based on the current standard, so when edit, it also feel like no in par, this make me more photos from the recently years than before.
But really, sometime the world trip in the past really only few photo I like and love, the rest I believe let keep in the photo library, in the wholistic life long horizon, what really matters most I believe still the few photos for the life only, so aim for filter and pick the few and use them for the various life memories.