I use pre orders all the time - I'm only on Amazon.
Slightly off topic, but in case you hadn't spotted it, Amazon has a "lock in" period for a few days before release - so you have to upload your final file X days before the release date (Amazon tells you the deadline for final upload).
You absolutely can bring the date forward if you need to, but the lock in period also applies.
I usually have a long pre-order for the next book in a series, but state a target release date on the book's product page - so I bring my pre orders forward all the time, too, and have never had any push back from readers. (Mind you, I'm a small fish in the big pond.)
Best of luck.