They say when you become an expert at something, it means you have comprehensive knowledge or skill when it comes to that thing. Now, travel isn’t exactly something you learn, so it may not seem like a subject you can exactly have “expertise” in, but you can.
Everybody thinks they’ve got a tip when it comes to scoring the best deals on trips: book flights on a Tuesday, clear your cache so “they” don’t know you really want the flight, book hotel and airfare together, book four months in advance—no four days in advance. Ugh. The mixed signals are enough to set anyone crazy and make them just book what they see when they see it, deal or no deal.