When using Find and Replace, I'd like to have Word stop after each Replace so I can confirm that it did what I wanted, instead of rushing ahead to the next Find instance. Is this possible without writing a macro?

Yes, this capabability is built in.
In the Replace Dialog, after you have typed in your find and replace, click on "Find Next."
Then, if you want to replace the found text, click on "Replace."
If not, click on "Find Next" again.