If your invitation says "and guest" then yes! If not, we would prefer if it was just you.
That is totally up to you! If you want a night to yourself then we won't judge you.
Oh, you bet! It's called your feet. Just kidding, the reception hall is conveniently located on the property. So, there is no need to drive anywhere.
Sunday best, please. But we want you to feel comfortable, so if those shoes are too high or that top button is too tight, let it all hang loose.