Make a list of everything you will need to bring with you on the big day. Gather everything in advance and put it in one spot so that you don't have to search for an essential item at the last minute.
Bridesmaids dresses do not have to all be the same design. However, it is best to keep them in the same color family or style.
Remind people who will be doing toasts to prepare something in advance. Tell them what you do NOT want to hear!