If your invitation says “and Guest,” then yes, if not, we would prefer if it was just you.
We are! A link to the registry is up in the site menu.
Sort of. Each guest over 21 will be given two drink tickets to use on wine, beer, or a signature cocktail. Anything after that will be cash bar.
It's not a black tie situation, but maybe skip the crocs. A nice dress or maybe a button-up that makes you feel real classy will suffice.