Thanks so much everyone for your responses. Her first trip certainly won't be her only trip to
Disneyland, I imagine we'll try to make it down there every two years or so after. I was just looking for an ideal age for her very first magical trip where she'll enjoy the whole experience!
I'm not sure you can figure that out for anyone.
This is how I feel too. Because, really, there's no guarantee they're going to remember anyway. My family went when I was 5 and my siblings were 11 and 9. Guess what? NONE of us remember it! Maybe a minute here or there, but that's about it. Nothing spectacular. But my parents sure do, and I always loved looking at those pictures! So even though my siblings were older they don't remember at all, and I feel like they must have missed some of that Disney Magic

from being older, because they don't love it like I do!
I went to DL as an older child, more than once, and I remember almost nothing about the trips. I'm the oldest of the siblings, but just the other day my younger brother was saying that his only real memory of another brother (the brother I was talking to has estranged himself from the other sibs and our dad) is getting onto the subs at DL at 6 years old. I have NO idea what he's talking about, because I don't remember that trip in any way shape or form. And I would have been about 20! So there's a possibility I wasn't along for the trip, but shouldn't I remember THAT?
So anyway, OP, you're only a little way north of me. And the exchange rate works for you now, yes? So I'm not sure it would cost you much more than it costs us to get down there, with that exchange rate in mind.
We went when DS was 1.5 years old, though it was a day-trip inside of a bigger trip to visit my brother. We enjoyed it, loved it, he was easily "worn" around and nicely under "control".
We went again the following year when he was around 2.5, again, a day trip inside of a bigger brother-visit. It was terrific! He was more aware of things, and even though he had more of an opinion than the first time, even that was fun.
Best part about those trips was that DS was free to get into the parks. Can't beat that!
A few months after the second trip, he suddenly started talking about it, he remembers more than we do unaided. Dh had a co-worker who refused to take his kids until they could remember, and his kids were 8 and 11! Talk about not having much confidence in his kids!
That said, along with the Disneyland stuff, I barely remember my own honeymoon cruise, that I planned, helped pay for, and looked forward to immensely. But I was exhausted in every way, and it turned out I was one week into pregnancy, and I was passing out at 8pm every night (I missed the chocolate midnight buffet!!!). So even into adulthood, going with the memory thing is a tricky thing...
Then this September we went just to Disneyland (6.5 days, no brother-visiting), and he was almost 3.5. He loved it even more!!! He continued to show that he remembered things from previous visits, and actually started to talk about things from his FIRST trip. Which is spooky.
And we went again in December and it just gets better.
I know that some of his enjoyment is because he's getting older, but I couldn't possibly even TRY to separate that from the building-block sort of effect that each trip has had. It's layered, so I can't say that he would enjoy it just as much now if we had NOT gone before, you know?
Go when you want to go. Let go of the "perfect visit" thoughts...I kind of figured that this December trip was going to be beyond perfect, and I was that almost crying, very upset, "why won't you listen to me" mother more times than I care to admit (and many more times than I admitted in my trip report, LOL). It wasn't perfect for him, it wasn't perfect for me...if I'd fully had that expectation I would have been devastated, instead of just super-annoyed at the whole situation.
Have fun, whenever you choose to go!
Oh, and taking DS twice when he was free made paying for him when he was 3 MUCH more palatable.
