Watching the event, Allie, 12, from Shankill told us: "It was brilliant when they went up high, they were so close we stood up."
S Club 7 even leant over the barriers to say hello to the crowd below and most people got on their feet to dance with the band, who were in some areas just metres away.
But one unhappy ticket holder was glad when they returned to the main stage.
Bryan, 10, from Dublin, told us: "We were at the bottom and I couldn't see when they were up high."
There was also a massive surprise for the early birds who turned up for the support bands.