That is a good description. I would love to cruise on QM2 at speed, but they rarely go above normal cruising speed on her these days. Most ships have a bit extra up their sleeve for when they are late or have a medivac. Extra speed is also possible with assisting wind & current. We did a Rock the Boat on Radiance in 2019 and following a medivac, there was no way we would be back to Sydney in time. After a day and a half cruising at 23.4 knots, our rocket ship was back on schedule. Expensive on fuel though. Operating at speed usually means the stabilisers are retracted, and it does feel racy with a bit of bounce and wobble.
Most parts of the world have ships cruising in a relaxed manner. The schedule from Sydney to Noumea requires the ship to average close to19 knots for 2.5 days, which is far from relaxed.