This is a personal decision and depends on how much you would like to explore the island. A car is needed if you plan to explore anywhere outside of 30 minutes from the wedding location. The Big Island is very BIG for an island. Uber & Lyft exist, but can be unreliable at times. If you plan to stay in Kona then perhaps you can get by with Uber & Lyft. Check out Costco and Turo for more cost effective car rentals.
The weather in Kona will most likely be in the high 70s to low and mid 80s. It's a tropical and humid environment. Kona is considered the dry part of the island and doesn't get much rain, but there is chance for quick light sprinkles that allow for beautiful rainbows to form. Different parts of the island have different climates.
No, unfortunately not. The only young kids at the wedding are those involved with the wedding party and a few teenagers. However, children are welcome at the beach party and luau.
Please contact us directly if you wish to bring a person with you that is not already listed under your RSVP invitation on the website.