First off, welcome!!
Secondly, I think you may have answered your own question. Comparing Cedar Fair to Six Flag's/Premier, is like comparing cats and dogs. Their both amusement parks, but they are worlds apart.
Cedar Fair has a knack for "doing their own thing" with their parks. There tends to be similarities in areas like the rollercoaster arsenal between Cedar Fair parks and Premier's and Paramount, on and on... But Cedar Fair seems to take a different niche to make their parks unique, yet appealing to all ages. In addition to breaking quite a few records along the way!
As far as being gobbled up by Premier, worry not! Cedar Fair is becoming their own power house by expanding their presence in the west coast market, did you read the announcements of the acquisition of the water park near San Diego?
I, myself, have never been to KBF, but plan to make a visit on an upcoming business trip. I imagine, that it will be worth the visit (hence having my season pass to CP get me in the gate!)
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Neil
Tertiary Adjunct of Unimatrix Zero-1