10. Everyone and all their relatives will be fighting you for a spot in line at Starbucks. It's guaranteed to be at least 40 people long. (But don't worry, you aren't going anywhere.) 9. Every flight will be oversold, and there will be no upgrades to be had, regardless of status. On Sundays, there's no [...]The post The Top Ten Reasons to Never Travel On a Sunday appeared first on Ultimate Class Airfares.