Spectators do not get to drive on the stages. All spectator areas are accessible off stage.
Even once the stages are cold, until the crews are all removed from the stages, no spectators will be permitted on them.
If you are interested in driving the stages, volunteer. You will be able to drive on the one stage until you get to your assigned spot and the stage captain will place you there.
If spectators are found in locations that are not official spectator areas, the stage will be CANCELLED by the zero car. Do NOT spectate in unofficial areas.