I feel a lot of the budget for this pack went into swimable oceans. It's what everyone has been begging for since this game came out and I think they delivered some solid game play in that regards.
But it's probably also why other areas of this pack feel less expanded upon.
As much as I love this pack, I do feel it needs something more. An underwater area that we could have explored would have made this pack a 10 for me. Hotels I feel are better saved for a game pack, so I understand why they didn't include them, and houseboats would have been difficult to implement in the Sims 4. But scuba diving could have been amazing, and I'm disappointed it's only a rabbit hole.
Also, (and this is just a personal gripe) I wish there wasen't so much foot traffic on the natural island. I'd love to play a castaway or amazon challenge there but the random townies kind of ruin the feel.