Cocktail attire to casual. The venue is all out doors so please dress comfortable to be outside. There is a dance floor but a majority of the venue is on grass. The weather in Texas during this time of year is usually warm during the day and can get chilly at night.
Yes, if you are staying at Y.O. Ranch in Kerville there will be a shuttle going to and from the hotel to the venue.
There is parking at the ceremony. When you arrive at Elm Pass Woods look for the big red gate and there will be signs for parking in the field.