You had good reason to be concerned. With or without an instructor, accidents can happen in such circumstances. At some point during the draw the gun will not be pointed downrange and therein lies the danger. Couple this with inexperienced shooters and it's an accident waiting to happen.
NONE of the ranges in my area permit either draw and shoot or rapid fire, for good reason.
NONE of the ranges in my area permit either draw and shoot or rapid fire, for good reason.