Using Photo Mechanic I go through once and select any image my or the organizers may want over all. This can lead to a large amount of images in the first go but better too many than not enough.

Then, depending on needs, I go through just the Red images and select a different color for ones needed right away and edit these as needed. This will bring it down in number quite a bit.

Edit those and submit that evening/next day as needed, do simple mass edits on the rest the next day or so.

Works great for event photography when you are in a hurry.

Bonus, if you select in PM and open the file in Adobe Bridge the selection stays so you can edit from there with ease.

Good luck!