Whether I check or uncheck the "Don't show again" checkbox, it still appears.
The "César Badilla, one or more of your trips are around the corner. You set the start date in the next 15 days. We suggest you rush to book to guarantee availability" message still appears when I click on Okay.
When I click on Manage Trip, I see this screen:
http://c271482.r82.cf1.rackcdn.com/itinerarymanager.png
When I click on the Okay button of that pop up, I am sent back to "My Trips":
http://c271482.r82.cf1.rackcdn.com/mytrips.png
Side notes: