Seamus hadn't been behind the bar when Ginny arrived - but he spotted her pretty quickly when he returned to his post. "Well, hello beautiful ladies," he said as he approached Ginny and Katie. "I see the birthday girl already has a drink." He shook his head in mock disappointment. "Katie, I haven't seen you in forever! Would you like to try Ginny's birthday cocktail? It's Gryffindor red."
Seamus reached under the bar and pulled out a clean piece of parchment on which he'd written the ingredients - in case Ginny brought any friends with her who might want to give her birthday drink a try. Besides, he didn't know what the hell else he was going to do with maraschino cherry liqueur, so as far as he was concerned the more he sold tonight the better.