You should be ok at 9 AM. Our afternoon appointments have taken much longer (we were there over an hour once because they were running very late), but morning is a good time to go. You'll be there around 30 minutes. My DD was done in 25 minutes in July. We arrived about 10 minutes before her reservation time, and we waited less than 5 minutes for someone to call her name, so I would advise you to be there early.