You don’t want to find out that you have no wedding cake because the baker was waiting for you to pay a deposit. If you don’t feel comfortable paying sixty percent up front, say so.
And for goodness’ sake, don’t pay a hundred percent up front unless you really know and trust the vendor (as in, it’s your mom).
Yep, it is totally annoying when someone does it in conversation, but it is totally awesome in a written contract.
Instead of “I” and “me” and “you” and the like, simply put your name and the vendor’s name. If you are entering into a written contract that is provided by a vendor, which is usually the case, you need to know what you are signing. If you still don’t get it, or if the verbal explanation doesn’t clearly match what you are reading, SAY SO.
If your mom and dad have agreed to pay for the venue, they need to be the ones signing the contract.