We are doing the legal ceremony here at home as well.... and not telling anyone (except my mom and FI's sister). I also don't want to go through the hassle of translating my birth certificate from Italian to English, etc, and also have to deal with my divorce certificate as well.
I feel like it isn't anyone's business except our own, plus I hate confrontation I don't want to have to deal with any flak! What they don't know won't hurt them
From everything that I have heard, no one will know the difference. I plan on mentioning it to our WC just to make EXTRA sure. I read that another couple who 'faked' blood tests by wearing bandaids for a couple days to throw off their guests....good idea!
Do what works best for you, it will be great!