OTA
Luke had snuck in to get some candy, something he found hard to pass up. He had found it a bit hard to pick a costume and was a bit surprised at how many options there were from his own world. And why was his father such a popular costume? He totally didn't get it. Or the slave Leia outfits. Totally disrespectful.
In the end, he'd picked what passed for a knight on this planet, which he'd learned was a medieval occupation that was a bit like his own-helping people, keeping the peace, fighting when necessary. Instead of his robes, he looked like he was wearing armor and a helmet, and he had an imitation metal sword. Granted, his own blade was still tucked into a pocket; it went everywhere with him.