If you want to ensure your friends get to see you jump, they should arrive at the same time or shortly after you do for check in. Each day and each group is different so unfortunately there is no way we can give any definitive answer. The group before you might have cancelled that day and you might go right away, or we might have a weather delay that has backed us up several hours. Even when you check in, there are too many variables to answer. The only sure way to have them come with you and wait.