So, all I did was forward my confirmation messages to firstname.lastname@example.org, and it made this master itinerary. (It's a picture of a long webpage. Click on it to see it bigger.)
(I love the way the itinerary is organized in the same order that I'm going to be addressing things. Plane, Car, Hotel. Then, Hotel, Car, Plane on the way back. The little bits about the weather, online booking, and the map are nice things to throw in, too.)
It just scraped info from the email it received, and sent me a reply back with a link. I added my trip's ical feed to my Google calendar, and it worked.
I am so pleased with this service. Makes me want to travel more!