On the subject of Amtrak and tying it in to the tactics learned on this forum, I have used travel hacking to accumulate quite a few points on Amtrak. I have traveled across the country once, from Philly to DC to Chicago to Seattle, another trip from Seattle to Utah, some smaller trips...all using points! I have never purchased an Amtrak ticket with cash. I have gone through 2 Amtrak based credit cards. I have had them for a year then cancelled them.
It does take longer to travel, but I am FIREd, so I am OK with it. It does suck when there are Amtrak travel delays. Another downside is sometimes the train arrives or departs at your desired location at odd times like 3am or so.
I hope to use Amtrak again soon to travel from Florida to the Carolinas for a cycling event. My sister asked how I'd get my bike there...just put it on Amtrak! I could fly, but I hear of many travel issues with flying recently. I can't take my bike on the plane. I could drive, but I get sleepy driving after 4 hours and take rest breaks and gas is more expensive, even with my hybrid car. Amtrak is the perfect solution sometimes!
The trip would take 9 hours or so of driving, without stops. It can easily turn into an 11 or 12 hour drive. The train ride is around 13 hours.