Austin-Bergstrom International Airport is the closest airport. From the airport, it is about 15 minutes to downtown Austin.
Austin has a rideshare app called Fetii that is exactly like Uber and Lyft, but instead it is mini buses that accommodate 12-14 people. You can call one for travel right then, or schedule in advance. Their app also makes it very easy to split fares among all passengers.
Uber and Lyft are also great ways to get around and get to the wedding.
The wedding is a solid 30 minutes from downtown Austin so please plan any needed rides accordingly. We STRONGLY recommend scheduling rides in advance when it comes to leaving the wedding.