Living in California; we’ve had the opportunity to sail on all the CA ships (Inspiration, Imagination, Splendor, Miracle, Radiance, and Panorama)
IMHO; for the 3-4 night runs to Ensenada our little slab-sided girl (the two fantasy ships) were perfect!
The Splendor was VERY roomy feeling overall (although odd Pink Donut decor haha)
The miracle is OK for 3-4 day runs..but on a 7-10 day on it, it just is too small (only dining choice is MDR, steakhouse or Lido deck)
The Radiance is a GREAT ship..honestly for even longer than the 3-4 day runs we have it for.
The Panorama (again JMHO) is waaay too cramped to sail on 7 day voyages.
All of these ships we’ve been on with 100%+ capacity..the only one we FELT it on, was the panorama..it was just wall-to-wall people and the walkways were all maybe 3-across..throw a wheelchair in there or a scoter and forget it you’ve got a bottleneck.
I think carnival should swap around the California fleet
3-4 night LBC runs: Miracle
4 night SF runs: Panorama
7+ night runs: Radiance