Husband and I love to meet other people when cruising, so we generally like to sit with others. Twice we have had AWFUL table mates. One experience we had with a couple who were about 3 martinis in by the time the main course came and did nothing but bicker at each other. We moved tables the rest of the week.
The second couple on another cruise were such racists that my husband almost punched him in the mouth right in the dining room. We got up and left during our main course and my husband said "I guess you must have forgotten to pack your white sheet" as we left. The fact that he felt so comfortable talking that way with complete strangers really boggled our minds. Of course we changed tables for the remainder of the the cruise then too.
So now we are a little gun shy about requesting a large table again. I guess a table for two is in order this time.