I usually book using the Marriott website, but was having trouble getting something to go through, so I tried the app. The app showed a rate at least $30 higher than the rate I had seen (and was eventually able to book) online. I was looking at a AAA “hot deal” rate online, but the app did not show that, and instead showed simply a higher “AAA” rate. Is this unusual, or should I start to routinely check both places to find the better rate?