So I've heard when ordering a wedding cake you don't have to order cake for the exact number of guests you plan to have. For example, if my wedding will be for 150 people, I don't need a cake that will serve 150 guests, because not everyone will eat dessert.
Is this true? And if so, how many people SHOULD you assume will eat so you can order the right size cake? Is it a percentage (75% of guests, etc).
Any help would be great so I don't have to order a cake and end up with tons of extras/leftovers...or leave people hungry wishing they got cake before it ran out!