is worth it with kids and no other island has something like it. Swimming with the manta rays is also cool. Everything that can be done on the other islands can be found on the Big Island with the exception of Pearl Harbor, and your kids are probably too young to appreciate that. I think weather is more forgiving on the Big Island, too. if it’s raining in one part of the island, it’s size makes it more likely you can find a place with decent weather.