THERESNOTWO/WAYSABOUTIT (18A: With 64-Across, words of certainty … or a hint to 23-, 40-, and 56-Across) is an interesting little theme. "NO" and "ON" bracket the three theme answers. Or do we say that there are really five theme answers, since 18- and 64-Across function as revealers? Either way, it's fine for a Wednesday, am I right? A little odd, maybe, but this is exactly where such puzzles belong!
I remember enjoying this one as I went along. RAW (1A: Like a new recruit) didn't come immediately (I tried "p.f.c."), but HOIST (4A: Raise, as Old Glory) did OCCUR (15A: Come to mind) without much trouble, and we were off and running! Don't you always wish, like I do, that the Omega were the 2D: Last Oldsmobile (ALERO)? I mean, it was an Oldsmobile model… it just would have been so perfect! Instead we get ALERO. Meh. And WAXER (3D: Car wash machine)? The "machine," as far I as I could tell back when I bothered to wash my car (Pro tip: It's not necessary! Never do it!), was a spray nozzle, nothing more.
Did you, like me, put FIFE (50A: Instrument in the painting "The Spirit of '76) right away, even though "drum" would also have fit? The thing is - who would clue "drum" like that? No one! Come to think of it, "flag" also fits, and you could be a real jerk about it with the clue "Item held in …" Luckily, this is only Wednesday, and Mr. Stulberg is a decent kind of a fellow.
As I look through this more, I find more to question. OCH (5D: Gaelic "Gee!") is iffy, for example, as is SURER (7D: Not so iffy). Heh. And sure, a SITAR may be an "11D: Instrument with sympathetic strings," but isn't any stringed instrument, really? A piano, for example? Or a harp? Maybe they're not designed that way, but they still are that way.
Meh… it was fine for a Wednesday.