Hmm, I am suprised, unless I was totally oblivious to them opening (Mem. Day always seemed to get publicized as the opening).
Depending on how much time you spend at Darien Lake, it may not be possible to do all three.
MFI - arrive @ 11
Spend only two hours, leave @ 1
Arrive at DL @ 1:30
Spend only four hours, leave @ 5:30
Arrive at SB @ 6:30, park closes at 7
I guess you could stay less than 4 hours at Darien Lake, but I don't know how the crowds will be. I went on opening day in '98 (was on the first ride for Boomerang

)
and it was a warm day, which brought a lot of locals out, plus there was a band competition, so there were hundreds of obnoxious little middle school kids. They may still have the band comp, but your best bet will probably be hope for a cool, cloudy day. You could balance it out and spend 2 hour at each park I think, if you are cool with that.
Oh, you are right, nothing had changed, except the ProSlide Tornado and the Top Spin.
Three opening days in one day, sheesh, Ive never been able to pull that off
