Okay, so I know that everyone complains how hot and crowded it is, and trust me it is HOT, but crowded- I thought it was very doable. We went about the same time as you, only a day trip, to the MK. The longest ride waits were for Peter Pan, BTMR,Splash Mountain, and Space Mountain. Oh, and pirates was about 40 min. (but it had just recently been updated when we went) Anyways, we (my friend and I) actually walked on to most things! So, maybe we caught a lucky break, but it proves that there's no way to actually predict crowd levels.