I’ve already seen the Doctor Strange movie due to its weird early UK release.
Ask me for spoilers and I will happily lie.
In the meantime, it doesn’t make that much use of the 3D IMAX-ness but a couple of the Ditko trippy sequences will lose something on regular screens. There’s more of the weaponised Inception folded space action seen in the trailers, but this is mostly shown far enough back not to be especially 3Dish.
It’s very very origin story, the pre-mystic origin is a reminder of just how much like Iron Man it is really and it doesn’t really address the wizards-can-do-anything problem effectively. But seeing this stuff brought to life is a geeky thrill, the cast get enough to do with their characters and their motivations, the bit where [REDACTED] is really cool, and the [REDACTED] is great fun. Stay to the end of the credits, not just the middle.