How do I get promo codes?

Once your app is approved, when you look at the app page in iTunes Connect there should be a "Promo Codes" link under Additional Information way down at the bottom of the page. That's where you request the promo codes.

Average app review times are currently reported as 6 days for the iOS app store (appreviewtimes . com). No there is nothing you can do to speed up the review process for a regular review. If you could do it, everyone would do it and then we're back where we started. You can request an expedited review for specific reasons (critical bug fix, fixed event date, etc.) but there's no guarantee it will be approved, and doing so will decrease the chances of similar requests being approved in future. If you don't really need it (just being impatient) it'll cause grief later when you do actually need it and your request is denied.

'Expedited' reviews can be requested - as noted, just be sure you need one as they aren't party favors...

Apple has this to say about that:

"Please Note: Expedited reviews are granted on a limited basis and we cannot guarantee that every request will be expedited. Sign in to request an expedited review."

Finally found it. It isn’t available through the app.

On the website on iOS it’s under the menu containing the blue “App Store” text (select “Services”). On desktop/iPad, it’s the “Services” tab.

From there, it’s the last item on the left “Promo Codes”.

Hope this helps someone else or my future self!