When I save my viz and then the preview comes up, it doesn't include the "Share" link at the bottom so I can grab the embed code. I can't seem to figure out what I might be doing wrong? Anybody have a suggestion?
You're referring to the 'Share' button in the preview window right? Could you take a screenshot of what you do see on your screen?
Another option is to click on the 'Open in Browser' link in the lower left of the preview window. That should open the viz in your browser, giving you the url link and hopefully that should get you to the embed code too.