Hey Lauren! Always fun finding familiar faces here.
I just did a test using my own secret calendar https://cloudup.com/cntRCw5Wr6I and was able to get the import to fetch the preview for me. This can be scheduled
You didn’t mention a solution to display the calendar to only logged-in users. At this time, we don’t have that functionality built in, but if you think that is something you would like as a feature I encourage you to visit our User Voice Page and either upvote an existing request or make a new request there.
You can suggest it it http://tribe.uservoice.com.
I’d be curious to hear how you achieve that in the meantime.
Hopefully this year I’ll make it back to WC Philly and a few other local WordCamps.
Let me know if you have more questions.
Thanks
Courtney 🙂