We were on the Athens to Barcelona leg of this cruise as well and found the Regal to be wonderful. This was our first cruise post Covid and we felt although there may be a few differences from pre Covid, the entire cruise was incredible. The crew was seemed very happy to be back and we found everyone to be helpful and friendly. We booked EZ Air from Charlotte, NC and all flights went smoothly and we had no problems at all.
We arrived in Athens 3 days before the cruise, which was a great choice for us as it gave us time to adjust to the time difference and explore Athens as well. Although we were only able to do one leg of this cruise, we hope to go back in a few years for the "rest" of the legs. Amazing itinerary!!
Your review was wonderful! We are booked on the Regal next June for the British Isle cruise and cannot wait to board her again!