Lila_Q

Mikaere was the oldest, but Ari is closer to Mikaere's age than Tane's. Ethan said in his initial interview that Ari was supposed to be 10 years older than Tane. Also, Tane told Mac that by the time he started school Ari and Mikaere have already finished it and moved to Australia. Considering that Chloe can legally drink, she is at least 18, so even if Mia have had her at young age she can't be in her 20s (unless she gave birth at 11).

Rob looks much older, and I believe that Ari's character is supposed to be in his late 30s. Apparently there's supposed to be a big age difference between Ari and Tane. Anna (Mia) is also 30, but considering that Chloe is at least 18 on the show, Mia's character is probably in her late 30s as well.

Rebecca is doing very well in Hollywood, tbh I would find it surprising if she actually came back. I think the actors don't want to shun the show so they always say they would consider returning but they never do.