If you are someone like me who tends not to take very good care of themselves while traveling, I recommend playing the Starbucks for Life game every December. It allows you two free game plays per day, and you can rack up points to use to keep yourself fed and caffeinated. One time I won $100 gift card and that lasted me like a whole year.
I like Starbucks because they are everywhere, ubiquitous in airports, and usually have accommodating hours for people who get up really early. The thing I like least about Starbucks is anything they actually serve there.
