Yes, self parking is available for free.
No, ceremony, cocktail hour, and reception are all at the same place. After party is a 2 minute walk from the venue and you wont have to move your car.
In April the usual low is about 60 and typical high is 80.
The ceremony will be outside overlooking the St, Johns river. Cocktail hour will be in a little outdoor courtyard. Reception will be inside of the estate.
Orange Park is an area just outside of Jacksonville. An hour and 15 minutes from Gainesville. 45 minutes from St. Augustine. 2 hours and 30 minutes from Orlando.
On average it only rains 5 days in April. In the case of rain we will just move indoors.