Climbers will make some noise climbing, but I have had deer come by within 30 minutes of settling down into the stand.
For climbing pre-dawn, a headlamp is a must.
I would highly advise you to get a ratchet strap. I always lock in the top of my climbing stand with a ratchet strap, even if the bark seems to grab well. When you are positioning yourself for a shot is not the time you want the top of you climbing stand to shift.