Do donning and dawning rhyme?
Yes.
Still not sure what the "aw" is supposed to sound like to those that vote no.
Making "dawn" sound different feels like you are making a 1 syllable word into 2...or at least making 2 vowel sounds back to back which is just awkward and wierd.
The W isn't silent. You purse your lips slightly to make the sound. It's not much different from what you call a baby deer, i.e. fawn. That word isn't pronounced like "fahn" would sound. There's a harder W characteristic to it.
You don your hat and wizard cloak.
You get up at dawn. If you're Hans Gruber, you request the release of your comrades in arms from Asian Dawn.
You say the W.