Yes, check out our Travel & Accommodations page for all the information that you need.
If your invitation says "and guest," then yes, if not, we prefer if it was just you.
A nicer sundress, cocktail dress, a dressy skirt and top or pantsuit is appropriate. Wedges or dressy sandals are perfect footwear. Dress pants or khaki pants with a collared shirt. You can add a tie or sport jacket if you'd like, but it's not required.