When we go to the dining room (for flexible seating) we always indicate we're happy to share. Sometimes we are seated with others, sometimes at a small table but adjacent to another so it's almost the same. Occasionally it just doesn't work. We usually do MDR and simply request a table of 6 or 8. Have met some really nice people that way (as well as a couple of duds) If you want to be with different people each night you'll have more success with "any time". If you want to stay with them, just set a time between yourselves and show up together.