The hotel that we recommended is actually in the exact location as the reception, literally a short walk away. Check out our Travel & Accommodations page for all the info you need.
If your invitation says "and Guest," then yes, if not, we would prefer if it was just you.
Cocktail, 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. We do ask that you avoid wearing any white or off-whites.