What This Means
The 600-point tier is where Alaska starts to look usable rather than merely present. It adds multiple Ovation of the Seas and Voyager of the Seas sailings, including Seattle departures and repeated Alaska dates. By 800 points, the region is clearly established, with Alaska appearing across both one-guest and two-guest structures.
If the question is where Alaska first unlocks, the answer is 400. If the question is where it becomes a realistic target with more than one viable sailing, 600 is the better threshold. For balcony access, 1,200 is the cleaner breakpoint.