We are booked on this cruise M504. Please don't get hung on whether Cubard is 'too formal'. It isn't!
We did the Canary Islands cruise on QE back in Oct 2018 and absolutely loved every minute of it and had no hesitation in booking this cruise.
I've no doubt that if you do decide to book, you will not be disappointed. We can't wait to embark although it still seems far off.
Maybe see you onboard?