The video points out something that stood out to me on first seeing the island. The buildings in Castaway feel like they could be a land at one of the parks. They are themed in a fun, mostly subtle, whimsical way that is Disney at it's best. They don't scream for your attention, but instead let you take in the details slowly when you look for them.
The buildings at lighthouse just don't have that fun Disney vibe to me. I know they were going for a local vibe, but they feel like they could be buildings at any port-area in any Caribbean port. It wouldn't have a large impact on my enjoyment of the stop, since the beach is the central focus, but I would have preferred a little more Disney in the design. Not in-your-face Disney, but more of Disney resort vibes with theming. It's another reason to love Castaway in my book. I know Castaway is not everyone's cup of tea, but it hits all the right notes for me. I'm glad to still have that option in the future.