We booked this cruise to use up a pre-pandemic credit from 2019. (Multiple intervening attempts failed.) We are grateful to Celebrity for the credit, for the extensions they granted to those of us with credits, and for getting back to sailing.
We went to Reykjavik six days early. There is plenty to do in Iceland and a mere port stop or a day or day is insufficient. Everyone we met was friendly. Of course, like much of Europe, many of the service personnel were from Eastern Europe.
Pre-embarkation: We set up ArriveCan accounts and downloaded info. Once we were able to do so, we finalized those accounts. We received clearance about 10 seconds later. We understand that the Canadian authorities got a list of folks who had not complied and who would be flagged if they tried to leave the ship, but who would be allowed to process a request at the dock. If you have all of your information, passport, vaccination card, etc., it will only take a few minutes. We got our Covid tests at the Reykjavik bus station, easy but for the downpour. Others did Internet observed tests. When I did not received prompt reports I called and within minutes had both negative certificates.
Cabin: We had an Aqua class on deck 9. The balcony is nice to look at, but there was really no point in the cruise that it was usable other than Halifax. Deck 10 overhangs the balcony so that it would be in the shade most of the day, anyway. The cabin was more than adequate, and there was plenty of storage. Our cabin attendant, Wayan, was outstanding. The bathroom is a little tight and the shower leaks; the only way to avoid any spray is to get into the shower, close the door, and then turn it on (pretty much Navy style). At these prices I'd like to check the temperature. There are limited outlets in the cabin. Fortunately, I had my universal adapter available as on one side of the bed there was only a European outlet. (We've been on ships with no outlets at all on either side of the bed.)
We arrived on a Sunday. The biggest church in town was closed. The main street had a couple of open stores. We did a tour of a dairy farm (friendliest cows I've ever met), had really fresh ice cream (outstanding) and visited an Icelandic horse farm (poorly explained). The horses did 5 different gaits.