Just off the Spirit and our experience was that you had to check in on the hub app and once your table was ready, you had 10 minutes to arrive at the MDR. Sometimes we waited less than 5 minutes for a table to be ready and others (elegant nights) it was 30-40 minutes. They were turning away anyone without a table confirmation at the door. Our complaint was that we specified we didn't want a shared table yet they seated us at one. After that, I asked for confirmation at the door that it was a table for 2. We enjoy spending our cruise as a couple and having intimate time together.