We took our first Celebrity cruise last June on the Solstice in Aqua class, and we loved it! We are soon going on the Magic to finally complete our grand slam....just in time before the new ships, but I'm actually wishing I had a Celebrity sailing instead. I'll make up for it in 2021. One thought....maybe go now to experience Solstice "the way it was". I'm guessing it won't be your last Celebrity cruise to then experience "the improved".
We did the beach version on Royal, and the lunch at the beach club was enjoyable...and after the heat of touring the ruins, a beach break was a great relief. Friends on the same cruise did Chitcinitza, and they spent a big chunk of that time in transit. We both loved our experiences!