I think the best way to make a long tulle skirt wearable, is to choose sneakers instead of high heels. So you become less a princess and more a modern woman, which is not so bad!
There is no rule stating that you can only wear high top sneakers to the grocery store or a walk in the woods; you can even opt to wear them with a dress (long and short), cropped pants, elegant suits and, of course, jeans.