You'll get different opinions but we've stayed forward on Dawn and Star several times in an OS. Normally while underway, it is windy. Sitting down not too bad. Yes deck nine bigger balcony, smaller room than ten but not by much.
BT should be chiming in soon as they've stayed in those rooms before and have pics.
PS, if you can swing it, grab an OS as you also have a covered side balcony plus extra perks.