Navy blue 28-inch suitcase with red tag

I found a navy blue 28-inch hard-shell suitcase this afternoon around 2:45pm in the parking lot behind Sloppy Joe's on Duval Street, Key West. It's a Samsonite brand with a bright red luggage tag that has the initials 'KG' scratched on it, plus a small tropical-sticker set on the corner. The case shows a few scuffs from travel but the wheels roll smoothly and the zippers are intact. I can only imagine someone worrying about it—it's clearly been on a long trip and probably holds clothes and maybe some travel keepsakes. If this is yours or you know who it belongs to, I’d love to help get it back to you.