We got there for a 9am opening with a passholder event before hand so opening might be different on a day without the event. We arrived around 8:30-8:40am. They started to let people though the tapstiles at 8:50am and we walked at a brisk pace to the land where we got in line for SDD. It took 15 minutes from getting in line to get on the coaster. Because everyone had to do the tapstiles it was not a mass running of the bulls and the few people that ran by got told by cast members to walk. So people trickled in which made it easier in my opinion. This was last week on Tuesday.