I love this Drinny. This is the first time I'm seeing it in a somewhat Muggle!AU and it was definitely refreshing. Ginny didn't seem annoying bitter over Hermione marrying Harry (which is a plus) and Draco was very humble and approachable (another plus). I also love that you show that Tonks and Draco know each other well, which is also something nice to see in fics.
This would be perfect as the beginning to a multi-chap but I think you stop it at a good place to be a complete fun one-shot as well. Great job.

Great story, can't wait for the rest of it! Keep writing, I'd love to see more of your work :)