Dialogue is weaker than past AC games, almost (or is) weak enough to not matter not knowing what they say. If I have a Japanese 3DS I'd get it for the PWP anywhere glitch.
Same thing with the daily four fossils if you don't want digging spots for them in town.
One appeal to having a private beach is to give reason for your dream visitors to swim if you provide them a wetsuit. You can place surprise items there.
If you have a lava lamp, ask Cyrus to make it yellow (it will be the green one). Use two or more to intensify the lighting. Festival lantern can be customized with green from clothing.