We have mostly done some form of anytime dining. We did however have 3 large tables with regular seating, two before lines established anytime and one after when the small Ocean Princess did not have it.
On the first, one couple barely showed up and a woman with a fairly young child sometimes showed up, but usually late. So that was not a real experience where we could chat with others. I do remember the joy the youngster had when a cake was brought to the table for our anniversary and he got to eat some too. On the second table, we did bond with all the others and saw them throughout the cruise. On the Ocean Princess, our tablemates were a German girl and her mother, a couple from Washington DC on their first cruise, and a couple from Canada who were more experienced cruisers than us and had sailed on world cruises. The German girl basically giggled a lot, and her Mother spoke no English. The government bureaucrat from DC was a bit of a know it all despite being on his first cruise. (I don't remember his wife saying anything.) But we did hit it off with the Canadians who sat at our right.
I do remember some good experiences with the people we sat with at anytime type dining. Once in fact, for some reason, the person next to me mentioned where he went to college and the year he graduated. I graduated from the same university one year earlier, so it was easy to find things to talk about.