I just created the first gallery. Because the tags apply to just the galleries and not the photos, I've decided the tags only need to be used to denote the time: "2011, 2012, 2013 and Pre-Idol." The title of each gallery will convey its subject.
Here is an example of what a gallery will look like:
Clicking on an image will launch a slideshow for the gallery.
The gallery will resize itself for display on various devices:
I'm not a big fan of the font, but the site's design needs a condensed typeface and it works better than others I have tried.