We were on Splendor for the TA cruise in April. My observations are right in line with yours: beautiful, elegant ship, great service all around, good food, talented but unengaging cruise director and staff, ho-hum entertainment. We especially felt the lack of interesting talks and creative activities to fill the stretch of sea days.
Pacific Rim was our least favorite too. It’s such an attractive venue, but the food we had on two occasions wasn’t well executed and we left disappointed each time. I’d skip it all together next time.
Overall, we had a very nice, relaxing two weeks, sounds like you did too. But…we both surprisingly tested positive for Covid on disembarkation day and had to spend an unplanned week in isolation in Madrid. I’ve since learned via these boards that we weren’t the only ones. Guess it comes with the territory these days. Happy sailing!