Good morning, Emily!
Anything that you have as a live landing page could conceivably be "crawled" by Google or another search provider. Only "approved"/live pages would be search able though. A good way to prevent this is to add the following to your individual pages or landing page templates:
<meta name="robots" content="noindex" />
While the "spiders" will still continue to visit the page, the information will not be indexed.
Let me know if you have any other questions or concerns!
Jesse