If I'm only there for one day in the summer or during Halloweekends, probably. 2 days, much less likely. 2014 was my first visit back since FastLane, so that's my only experience with it (did have it, and it definitely allowed me to ride as much as I was used to doing before FastLane). Since CP was my home park before I moved to FL, I'm not as bothered not getting to ride everything, despite it having been 4+ years between visits. Oddly enough, I'd probably be more likely to buy it when going to CP than KI, even though I've been to CP way more and know how to work around the crowds better there.Lol.. so maybe this is the better question-
Do you buy FL+ at Cedar Point? I absolutely won’t go without it.. with Kings Island we do go to KI enough that I only buy it once per year.. on other crowded days we may just watch a few shows and leave.. but, I don’t have to travel out of town to visit there.
Really though, unless you plan on going during a holiday week(end), you probably don't need FastLane for Carowinds, IMO. The longest I waited other than Nighthawk was about a half hour for Fury. Intimidator, Fury, and Top Gun all eat people, and those are the main attractions anyway, if you were to ask me.