We just returned yesterday from our first trip. It was sooo fun! Many of the "shared" attractions are, in my opinion, superior to WDW. I especially loved the Enchanted Tiki Room.
Here are the lines that are super long in MK, where FastPass is
not available:
Nemo Subs
Matterhorn
Peter Pan's Flight
To do these, we scheduled one ride for each morning we were there. Tuesday, the goal was to get to Peter Pan, Wednesday, Nemo Subs, Thursday, Mattherhorn (child swap available).
We were at the gates 40 minutes before open, therefore we were first at rope drop at end of Main St. You have to get up early and be first, or close to it, at the turnstiles. Be sure to ask CM which turnstiles they'll be opening. It changed each day we were there - sometimes even numbers, sometimes 8-17 ...
Go to these rides directly and quickly - without running. We were usually in the first or second ride vehicles of the day.
We found that after accomplishing these, we could still enjoy other Fantasyland attractions with minimal wait - including Dumbo.
Other popular attractions have FP, so we used those the same way we would at WDW.
Surprisingly, there were multiple times throughout each day of our visit when we were able to either walk on or have a minimal wait for POTC and HM.
We didn't spend as much time at California Adventure because the rides we were interested in (Soarin' and TOT) have FP and you can literally walk from MK to CA in under 5 minutes. We went between parks alot depending on our FPs for the day. Monsters Inc. does not have FP, but we were able to walk on or have minimal wait several times.
We did not do any rides at Paradise Pier. DH went there for TSMM while we were napping and was able to ride it 4 times in a row (with the longest wait time being 5 minutes) through the single rider line. He said he could have ridden more but he was developing "tennis elbow".
Hope this helps.