Looking to travel this fall (Sept or Nov). Have a 4 yo and 1 yo. I'm still waking up at night w/ my little one so DL seems exhausting- I'm usually so excited about planning but not as much this time around. Aulani seems so relaxing but I think my kids would get more out of DL at their ages?
Soooo- what ages are better for Aulani vs DL?
I think it depends, which I guess is the answer to every question, LOL.
My kids are currently 4 1/2 and 2 1/2. We went to Hawaii (Marriott Ko Olina, not Aulani but next door) when they were 2 1/2 and 11 months, and to be honest it wasn't all that great. I'm assuming you live in the California Bay Area like us given your username. The flight over there was pretty miserable. I think the problem with Hawaii for us specifically is that our kids at the time didn't really like playing in the water or on the beach (though they love the pool now), so it was hard for us to keep them entertained. Ko Olina is also a bit of a drive to Honolulu and other attractions, and because of their nap schedules, it was really hard to go out and plan non-resort activities, but they didn't really like anything on the resort either, so you can see the problem. Even when left the resort to explore the island a bit, they didn't really have a good time and wasn't really worth the effort.
If your kids love playing in the water, you would probably have a much better experience. Aulani is a different resort as well, so maybe staying there would have been better, but for our kids at the time I don't think it would have made a difference. I think if we went now, they would have a much better time. Your kids also have a slightly bigger age difference then ours, so it also might be feasible to split up with the kids if you are traveling with another adult.
I have not been to DLR with the kiddos yet, but we are going in September. We go to Southern California frequently to visit my in-laws, and I much prefer driving for 6-7 hours than flying to Hawaii. But based on our previous trips (we've been to Legoland Florida and California, San Diego, New York, DC with the kiddos), I think the keys to going to DLR or any vacation with kiddos is not to expect too much. Don't expect to hit every single ride and to hit rope drop every day and go park commando. Don't get too frustrated if all they want to do is play in the play areas (that's what happened when we went to the SD Zoo, all they wanted to do was play on this crappy play structure, lol). If that doesn't sound appealing to you, then maybe DLR isn't a great option either.
One advantage of Southern California is that if DLR is not fun, there's all kinds of other stuff you could do. Maybe you could do 1-2 days at
Disneyland, then spend the rest of the time doing other things (or even just relaxing) if it turns out DLR is just not working. Beaches, playgrounds, there's the new Great Wolf Lodge in Garden Grove (indoor water park), museums, parks, etc.
Edit: I will say that Legoland is an awesome place to take little kiddos. After the aforementioned Hawaii trip, my wife really didn't want to take any vacations anymore, but we decided to spend a 4-5 days at Legoland Hotel, and it was great and really helped make her excited again about vacations. It's pretty much the easiest vacation you can take with little kids. We would get up, go to the free breakfast buffet, walk 2 minutes to the park. They get tired, easy to go back and take nap. They love the zero entry pool there. In the evening when the park was closed, they could play for hours in the hotel lobby. Eat at the hotel restaurant in the evening. Never left the hotel/park. And my kids love Legoland. Some parents would probably go insane doing this for 5 days, but we loved it because it was so easy.