Yes and if your invitation says “and Guest,” then yes, if not, we would prefer if it was just those written on the invite.
No, the venue is a short little drive to and from the Hotels. Please have a DD as there will be drinks at the reception. And also please be safe.
Semi-formal. It has a chance of being chilly that afternoon. I would like everyone to look as nice as they want but please be comfortable. It will be a party and a celebration after all.