using Amtrak RailPass for a Euro-style honeymoon?

My husband and I got married earlier this year and figured we would plan a honeymoon later once wedding stress had passed. Now we've started planning and being in the Midwestern United States has us feeling frustrated about travel options that aren't planes, as we do not want to use them.

I discovered the Amtrak Rail Pass yesterday and was wondering if anyone had any experience (or knows of a blog, vlog, etc) where somebody talked about their experience using the pass to do a city-hopping sort of trip/honeymoon/vacation using Amtrak, or the pass specifically. Cursory research didn't show me anything, but I did see that the pass was on sale from $499 to $299 in January, so I am going to keep an eye out and see if they do that again. If so, it seems like a (relatively) cost-effective way to do a longer sort of trip, hitting 6 or so cities along the way.

Any perspectives welcome!