An unfamiliar environment can add to uncertainty, which is why career professionals generally recommend that you pay at least one visit to any unfamiliar interview location in advance. (biginterview.com)
Global Entry interview locations are at almost every major airport but even they are not as common as TSA PreCheck enrollment centers and often have longer lines. (rewardexpert.com)
There aren't a lot of interview locations like there are for TSA Pre-Check and the waiting times for the interviews can be very long (sometimes months long). (uponarriving.com)