ON cruiser - I read your review (the full one) with interest since we were also on this cruise, the second part of a B2B. I just wanted to give my impression of some of the items you mentioned. While I had sometimes different experiences than you mention, this is in no way meant to question your unfavorable impressions.
We had no issues with the food on this cruise, either with taste, temperature or forgotten dishes. This applies especially to Compass Rose, our favorite restaurant (we did not eat in Chartreuse on this segment since we don’t care for it generally).
As far as service, we did not notice much difference from the previous cruise, but there was definitely a significant crew turnover in Dubai. As you mentioned the Observation Lounge, there was one new server, while very friendly and eager to please, needs additional English language training as she sometimes did not understand simple requests.
We did not have any problems with getting items washed cold in the laundry, but definitely had some laundry problems on other cruises.
i could not agree with you more on the early morning excursions (though I believe it may not be unique to Regent). They need to realize that we are on vacation!
Finally, I can understand why you may not consider Regent again. Since you mentioned Seabourn, we had quite a bad experience (worse than your Regent experience) on Seabourn after a number of enjoyable cruises. I made extensive comments after returning from the trip, but never heard so much as a word from management or anyone else. As a result, we do not sail on them anymore.