A few things have changed on international flights. Air Canada does not offer in flight entertainment, except for people with an apple device or laptop. The movies and flight info are shown to everyone; you connect to their WiFi and select what you want to watch. Unless you are one of those freak people who don't have a smartphone (only apple products are supported at this time) or travel with a laptop. But don't worry, you can rent an iPad! Flight tip: borrow an iPad or better yet, bring a book... Or best, sleep the whole way like Betsy :)
I took the tram twice in Houston airport. IAH is usually quite busy, but this time there were only two of us on the tram my first ride and I was solo my second ride!
Flight tip: fly on Tuesdays or wednesdays, it's not only less expensive, it's less crowded.