Very similar to me!
I did 1 night at SECC plus Murrayfield- my 1st ever gigs, not just of U2 but any band. In theory 1st band I ever saw live were Hue and Cry as they were the support.
I remember me and my mates going out of school at lunchtime and going to Virgin Records in Princes Street to get the tickets for the Murrayfield gig. Then I couldn't make that day as I was working so sold my ticket but then someone who I worked with had a ticket and didn't want and agreed to cover my shift so I bought ticket off them and went! Great day too with cracking supporting line up of Love & Money, Runrig, Mission and Pogues.