As I recall, we started on friday at about 6pm, then by saturday at 4am we collected/tagged the rails and finished building prototype structures for the columns (4/5 people).
On Saturday at 9am we started again and built rails until 2am on sunday (5/7 people).
Then from 9am on sunday to 12am (5/7 people).
Sunday at noon we started the first complete run, it took 23 minutes to complete more or less.
The official run started in the early afternoon 2pm/3pm...
Soon after we started setting everything apart and by 7pm it was all gone.