Maybe I'm over thinking this, but there is a box that says deposit amount and a second box that says total amount including deposit. I'm suppose to put the deposit amount (50%) in the first box and in the second one I put the 100% total? Sorry, I'm probably over thinking this

Also, does anyone know if I can put the deposit on 1 credit card and the rest of it on another credit card at a later date or will my credit card be automatically be charged 72 hours before my wedding?