How to Save on Air Travel Expenses
Know Thy Enemy
The free GateGuru app gives users a detailed map of their airport terminal or concourse, along with lots of information about amenities (including Yelp-style reviews). Users can search for specific things ("Au Bon Pain," "A.T.M.") or amenities in a certain area ("Gate B16"). Knowing what's around will prevent you from overpaying for the first option you see.
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So maybe you can’t change your health overnight. But you can get a head start.