What macraven suggests is what we did in January. Same park times as your date will be. 2 Adults, we bought one day tickets and were at IOA gates at 8:30. Got in went straight to FJ, then rode DD. We didn't mess with the shops or Olivanders. Went around the lake and missed all the water rides, due to timing. Saw most everything else including Poseiden's Fury and Cat in the Hat, etc. . . Jurassic park was closed that day so we missed it
Had lunch quickly there and then went to guest services and added the 2nd park. This, unfortunately took over 30 minutes due to a line. Kinda messed up our good day. I would suggest doing this inside the park before you leave. We went outside the park and used guest services at the outside entrance and that was a mistake.
Hot footed it over to the Studios and saw pretty much everything there too with the exception of Terminator. We got to see Fear Factor also. HRRR and Dr. Doom's Fear Fall (at IOA) were the longest waits with about 30 minutes each on this day. I think if they had short waits and we wouldn't have to spent so much time at guest services, we would've been able to get to Terminator.
All the other rides/shows at both parks only had about 10-20 minutes wait.
I must say, my stomach had enough by the time we did HRRR, our last ride for the day. I was SICK!!! All those coasters, OMG and we didn't even do the water stuff!!!!
It was a loooonnnnng day but really fun. I felt we got our money's worth with the cost of a 1 day-2park pass. It can be done but you have to sacrifice some things. Water rides weren't that interesting to me in January, lol. Also missed the obvious kids stuff with the exception of Cat in the Hat.
Good luck, let us know how you did!