No, I doubt if you'll run into a bad crowd. If you were going Spring Break it would be a different story.
The ship itself is nice. The cabin stewards...well, that's the luck of the draw, really. I had a wonderful cabin steward on the Carnival Conquest and an adequate one on the Splendor. So, you never know. I think you'll enjoy the ship itself. I do hope you'll have a good time.