Taking the Lynx uptown is a good alternative to sitting in traffic on 77 and parking uptown. The I-485 station is the end of the line, the southernmost terminal. It is also a park and ride station, complete with a huge parking garage that I haven't ever seen full. Keep in mind that the connection to the train is on the 3rd floor. There is an elevator, though.
The station itself is fine, it has a ticketing machine at each end and a middle platform, so you're always on the right side to enter the train. There are canopies, but they won't cover much if its pouring and windy. Tickets are easy to get and cheap. The Lynx is a good alternative to getting uptown, especially for a sports event or show.