"No, I have definitely floated on air." Please, as if Alice would not count the difference between those two things! Anyone can float on water!

.. anyone who doesn't instantly drown upon being in the water, anyway. She supposes that is a distinction.

"Many times, in fact. It is rather nice, especially when there are no monsters in the way to try and harass you during your peaceful floating session." Because she sure has a lot of experience with the latter as well.. Alice isn't allowed a moment of peace in Wonderland at times...