If you do not have your heart set on not seeing each other until the ceremony, I highly recommend shooting all of the formal portraits before the ceremony. Think of it like photography insurance for your pictures. I generally require an hour and a half for portraits (20-30 min. for bride & groom alone; 30 min. for bridal party; and 30 min. for family). If you choose to do a first look Your day would go like this. You would choose a location, {at your venue or not} where we can have him waiting for you. You would walk up behind him. tap him on the shoulder,  he would turn around to see you. Just you. Then you can focus on him, just him. No cameras, parents, none of that. No worrying about falling down the aisle. Just you and him. Then from there we would go straight into the bride and groom portraits alone, {20-30 mins} then we would take your bridal party pictures {30 mins} and if you would like to take pictures with your families you can at that time or we can easily achieve this after the ceremony.  Choosing to see each other before the ceremony, is a special time for the two of you to interact before the craziness of the day. After the ceremony I find that brides and grooms are not very excited to do portraits but would rather spend time interacting with their loved ones and guests. This is why I recommend getting the portraits out of the way ahead of time. If you choose the traditional approach of shooting the portraits after the ceremony, make sure to time your ceremony so there is sufficient light available. Natural light makes all the difference in the quality of your photos.  plan at least a half hour after the ceremony to interact with your guests or family before even beginning the portraits. So overall, make sure the ceremony ends 2 hours before sunset to be safe. In addition, I recommend planning in extra time between different events of your day as there are always unexpected things that come up and this will help to reduce stress and allow you to enjoy your day.