You've found a Unique Guest Book Idea and it's absolutely PERFECT. The price is simply below what you have budgeted, the quality of the puzzle has been authenticated, and you are ready to order. One questions still begs to be answered: How do you know how many pieces to order?
Actually, it easier to figure this question out than to choose between nail polish colors. We strongly suggest that you take a look at your Guest List and order roughly 80 to 90% of the total people that are on your list. Obviously, this number varies greatly if most of your friends are married, coupled, or shy.
But what to do if most of the people on your Guest List are single? While that makes for a wonderful time catching the bouquet or garter, it creates another question that begs to be answered: one piece for each? I recommend ordering one puzzle piece per invitation.
Hope this helps you choose the number of puzzle pieces for your unique guestbook idea.