We sailed the Spirit this past March and it was plenty cold the day we left but by the middle of the next day you started to see people in shorts and the kids were in the pool. The seas were not too rough on the trip south, but on the way back north it was. We rocked and rolled through that last night. But it seems as though it is inevitable with all the cruises we've been on, its either rough going out or coming back and you just brace yourself and sooner than later it ends. No biggie. If you're prone to motion sickness take your meds and all will be well.