I want to begin managing the Smugmug account of my child's summer camp. They have lots of photos every day (taken by 30 or more counselors on different types of devices).. and, they never get around to going through them and posting them in a timely way. I want to volunteer my services to do very simple photo editing and daily posting of the photos to Smugmug. (which is not getting done right now). I want to do this from my home, however. I don't want to live at the camp for 4 weeks! I'm trying to figure out the best option for all those counselors sending me their pictures every day... in a way that I can access them all and add them to my photos app on my MacBook. The key is that it's easy for them to use from whatever device they have.
Dropbox or Google Drive is probably the easiest. I'd go with Dropbox personally. I've seen it used by dozens of photographers for this sort of thing. You give everyone access to a specific folder and they drop the pictures in when they're done. Those pictures will sync to your computer's copy of the folder.
That's not the most secure solution, but it is the easiest if your photographers aren't malicious. If they are malicious they could take other peoples' photos off, for example. If you want a more secure solution you could give each photographer their own folder.