Flight
Kauai only has one airport so please fly into Lihue Airport, which is about a hour drive to Princeville where the wedding party will be staying.
Hotel
We haven't selected hotels but we would recommend staying in Princeville where the wedding party and families will be staying. It's on the North Shore and close to the venue so we suggest renting a car to get around the island and booking either a hotel or Airbnb/VRBO of your preference.