Before you generate, the panel beside the storyboard shows your frames and your opening and closing cards, so you can see the shape of the tour without spending anything. Once the clips render, the same panel plays them: click a scene card to watch that clip, and the finished tour plays in full as soon as it is assembled.
Your tour delivers the formats you selected before the storyboard opened, and the switcher in the toolbar moves the preview and the export crop between them at no extra cost. To add a format you did not select, open the finished tour and tap it under the download buttons. It renders free, because every format is a crop of the same master, and it appears in the switcher when it is ready.
When you are happy with the result, export. Downloads are available immediately, and a multi-format tour also offers Download all as a single zip. You can re-download any time from the Completed tab in Video Studio, the property workspace, or your Media Library.
Exports on a free or trial plan carry the Avenue 510 watermark. On a paid plan your exports are clean.