Back to your original question about Icon Jack. Just too big for us.
We sailed on Quantum this year and it was too big. It was also inward looking as are most of RCL's newer ships. Would much rather sail on the smaller, glassier, Radiance class
You couldn't see outside of the ship unless you were out on deck, or in 270degrees. We've just been on Resilient Lady and you could see the sea from pretty much everywhere except the nightclub or theatre.