You could ask their friends and family to stand up and say a few words about them. Something they remember, their personality, love for each other, compation for others,ect… This was really nice for my Grandparents. They also had a potluck type of party. Many of the family members brought different types of food. Many took pictures but I took pictures of everyone. Some people didn’t even know others were there. So, I would suggest having several people take pictures even if you have a professional photographer. Make sure you have a younger relative/relatives be “the photographer” you may be surprised what great pictures a younger person takes. Tell them to take pictures of everything. 🙂 If you purchase a few digital cameras you won’t run out of film. 🙂
Make sure you don’t have it in Aug. It gets really hot and cakes and people melt. 🙂 food will stay warm though. 🙂 Make sure you make have Mom and Dad corsages and boutiner ordered early(and picked up). Mom’s new dress fits right before the event and dad has a nice outfit and his socks match. LOL… ( I have seen this be a critical problem right before a large event.)
Make a budget and stick to it as much as possiable. Decide if you are making Food, decorations, and where you are having it right away. If the pastor will be putting it on you will have to get the Date from him and then get a hall next. Unless it will be at their church. That will make it easier. You may have to secure a person to play the piano unless you plan on having it on tape. Also if it is in the church you will have to decide if you have to decorate the church or pews. Another idea is to have it at a country club and just have them do all the catering and put up the chairs and have it there and have the reception there also.
Hope it goes well. Blessings!