Global entry is only an advantage on returning to the US, it allows you a separate line through immigration. To get it, yes, you need to apply, pay a fee (a credit card you have may pay for it, or not) then schedule an interview, in person. Slots for interviews have been a problem, and unless you live in a larger hub, you have to travel to have the interview. So, you have cost, and travel cost, and time to get Global Entry. If you travel once a year internationally, I really do not see the payback. I used to travel 3-4 times a year internationally...and could not see the payback. My experience is that I spend about 20 minutes in immigration, some times less, some times more, but rarely over 30 minutes, if ever. My last time through immigration (last week) through Atlanta, I was through faster than the Global Entry people (Apparently there were a number of people who could not figure out the automated kiosks, backing things up). Of course most everyone was standing after immigration waiting for checked bags, so minutes gained, were pretty much lost after. (Global Entry does not get your bags quicker). I do have TSA precheck, that is handy leaving, but really, Global Entry seems more hassle than advantage. If I was stuck always using one of the horror airports where entry is a two hour process, then maybe, but flying Delta, and using ATL, MSP, DTW, or even JFK...just does not make sense.