If anyone is in Minnesota and can make the drive to International Falls, I highly recommend it. We had an interview for MSP scheduled for September 23rd (conditional approval was received the first week of July and that was the first available appointment), but this is for my daughter and she didn't want to miss any school. So we decided to drive to International Falls and do it there instead. On the TTP website it's a little weird...there are two options for International Falls and the information on the front page indicates they don't do interviews on Fridays. This is NOT the case, as we just did our daughter's on July 19th and there was wide open availability two days before when I scheduled the interview. The GE interviews are at an administration building that is not at the border crossing. The CBP agent who did our interview was super nice and chatty and he did tell us that someone has to drive from the border station to the administration building to do GE/NEXUS interviews. It's only about a mile, but you should definitely schedule an interview rather than trying to walk in. I kept watching the appointments and there is same-day availability so going through the scheduling process shouldn't be an issue.

We did want to go over the border to Canada so my daughter could say she's been there, and the CBP agent gave us directions on how to walk there rather than driving so we could save the $7 toll that is charged to cross the bridge in a vehicle. It was a little surreal to walk into another country and neither side really has any solid barriers or fences in IF. Our processing into both countries was very informal. Very different from an airport port of entry!