They do bother so you will be best with your DJ etc. As for the suites people hanging over the side on the top deck can see on to the outer edge of 9003 because it has a larger balcony - can't comment on the inside of those suites but you can not access them by a lift - you have to use the stairs from the floor above or below. I think the suites have a different layout inside and some have larger balconies than others but not much to choose in balcony sizee.
Thanks for prompt reply. Little apprehensive but so looking forward to our first ever cruise!!!