A few things that will help photos go smoothly & make sure you all look perfect:
Have your hair and make up professionally done. It's also a good idea for bridesmaids & moms to do the same.
Make sure the groom and groomsmen don’t have anything in their pockets during the ceremony or photos. Leave keys, cell phones etc in the vehicles or at the venue.
It's your wedding day, enjoy it, laugh a lot. Don’t be afraid to laugh! & when you do laugh or giggle, don’t hide it or pull away from each other, embrace it and laugh together. That will make for some adorable & natural images!
If the weather is looking bad the week leading up to the wedding, be prepared with umbrellas or jackets and appropriate footwear.