What This Means
The 400-point list is thin, so this is not a broad Alaska tier. It is a single strong entry point. Still, it matters because it puts Alaska on the board at the lowest tier in the certificate, before the more usable 600- and 800-point bands.
At 600 points, Alaska becomes more repeatable, with multiple Ovation and Voyager sailings from Seward and Seattle. At 800 points, it becomes genuinely practical: the Alaska mix deepens, the sailing count rises to 292, and the best results include balcony and one-guest offers with $100 free play.
So the threshold is 400, but the comfortable planning tier is 800. If the goal is simply to unlock Alaska, 400 does it. If the goal is to shop Alaska with real choice, 800 is the better working level.