I just sailed the Rotterdam last month. I took a group of family, friends and co-workers with me, some had sailed HAL, some had not and some this was their first cruise. I know everyone's experiences can be different, but not sailing since 2019 I was a tad bit nervous how cruising was going to be after covid, my concerns were totally unfounded.
I was pleasantly surprised at the food, service and the entertainment was all fantastic. I have asked the others in my group how they enjoyed everything, they all thought it was a fantastic cruise, loved it all. I am sure not everything was perfect, but we all felt so fortunate to be able to sail again. I have several in the group who booked another HAL cruise while they were onboard.
I had opening dining and while I only ate in the dining room for dinner once the entire cruise, we were seated within 5 minutes and we were a group of 9. We were seated towards the front of the dining room and could see the entrance, no long lines, everyone was seated within a few minutes.
My experience was fantastic, I am looking forward to my Alaska cruise on the Koningsdam in 2024.
I hope this helps.