Mary honey, I am not sure where you got the idea that planning a wedding was going to be fun. In my experience, there is an inverse relationship between the amount of fun and the size of the wedding! I kinda think you just have to plan in advance the best you can and try not to panic!
The wedding day is NOT going to be perfect. Something always happens... always. Believe it or not, you WILL laugh about it later. Some things take longer to laugh about than others... liek having another bride and groom WALK THROUGH YOUR GARDEN RECEPTION TO GET TO THEIR OWN RECEPTION ROOM
Really... I promise, you really can laugh by your 5th or 6th wedding anniversary