We did 2 segments from June 20 - July 10. The second segment everyone - including those that were doing the full world cruise - had to stand in line by the theatre to recheck in I guess…. In our case we had to get new cards for that segment, not sure what the others did, but they were all in line and a lot of them were complaining about it. So in that way, they were affected a bit.
It was also noticeable around the ship when the new cruisers got on that day. They were loud and everywhere, a bit chaotic, which is normal for people excited about a cruise, it changed the vibe of the ship for awhile.