AK is our least favorite park. We've never done the trails, but we also aren't big zoo/animal type people. We do the safari once while we are at DW, but missing it wouldn't bother me. I do love EE and like to ride it a few times. Dinosaur is fun too. FOTLK we went to for the first time last month and liked it, but it's not something I'd wait in line to see again. We did NRJ and it was ok, but probably won't ride again. Didn't get FP for FOP because we are bigger and not sure if we'd fit.
HS has my favorite rides (RNRC and TOT, and we loved SDD), but I don't think I could spend a full day there. Also couldn't do a full day in EP with a child, but if it was an adults only trip (never do that) I could. As someone that goes every couple years, MK is probably the only park I could spend the whole day in at this point. As a new or infrequent visitor than I think you could spend an entire day in every park though.