second dress bride..do I even bother with bustle on first dress?

So after posting my pics on dress thread, I realized..

why pay for a bustle?
I am taking pics with it down, I can hold back..then ceremony...at cocktail hour I can hold it too since I will be gone for half of it (pics with MY family and to change in other dress).

SHould I bother paying extra for bustle???

are u sure u gonna be able to walk around in it at the CH?
if yes, then ur right, why bother