Which Ship for Best Adult Pool/Sundeck Area?

Hi all, we're starting to plan our next cruise and the main thing we care about is the ship itself, specifically the adult-only spaces. We've been on a couple where the solarium was nice but felt a bit enclosed, and the main pool deck was always packed. We're hoping to find a ship with a really good, spacious adult sundeck area, preferably one that's not just a tiny quiet zone but an actual pool/hot tub setup where the vibe is a bit more... relaxed and social. Someplace where you can actually meet people. Sundeck nudity isn't a must, but a less crowded, more "you do you" atmosphere definitely is. We usually sail Royal or Carnival, but we're open to other lines if the ship fits the bill. Anyone have specific recommendations for ships that do this kind of space really well? We'd love to hear about your experiences, what the crowd was like, and if it's the kind of place where people actually mingle or if everyone keeps to themselves. Thanks!