Cocktail attire is perfect. The venue is right on the water, so you may want to bring a light jacket or sweater for when the sun goes down.
The wedding ceremony and cocktail hour will be outdoors weather permitting. The reception will be indoors.
No, there is no transportation from the hotels to the venue. The hotels and venue are very short walking distances from each other with no hills.
There is plenty of free parking for everyone at the venue, but overnight parking is not allowed.
Yes!