Luna let him talk. She didn’t really understand much of it. But could piece together the gist of what he was saying. He always got chatty like this when he drank. It, while amusing in its own right, never seemed to have a real point. He just wanted to talk for the sake of someone willing to listen. He obviously didn’t have many ponies he could really relate to or confide in. She and Celestia were likely the closest things to friends or relatives he had now, and even then only by virtue of being the most familiar with his situation. It was a tenuous relationship on its best day. Which is partially why she so valued moments like these. 