Kahului, Maui, Hawaii (OGG) airport.
Ka'anapali, Lahaina, Napili area or what is known as West Maui. Look for areas around the Ka'anapali beach.
Depends on what your plans are. If you are staying in the Ka'anapali area near the shopping center, you will be able to Uber to most places. Note: the airport is about 45-60 minutes one way to Ka'anapali/West side of Maui.
Your RSVP email has your week's schedule, but you can also check the locations/times in the "Schedule" section of the site.