I just returned from our trip and we surprisingly found Daisy on Day One of touring on April 4th at the Camp Minnie-Mickey Character Trails in Animal Kingdom. Major score!:sohappy:
It seemed like she was going to be there most of the day.
And I distinctly remember your post from a month or so ago and within the responses were accounts from other people that this locale is the place to reguarly find Daisy. So I say if you go to AK, definately try there.
There are also three major character greeting places in MK. One in Main Street near the Train Station. One in Fantasyland in the old Submarine Ride que area. One in Mickey's Toon Town in the Hall of Fame Tent. We never went into any of these, but there's a good chance that Daisy may be present. Ask a CM posted out front and they'll tell you who is signing autographs for that day.
At every park, we saw Mickey, Goofy, Baloo, Timon, Chip & Dale, Rafiki, and Mad Hatter (not at AK, though).
Minnie is very present in all four parks. I'd be very surprised if you don't find her during your trip.
Character meals were great. We did three--Chef Mickey's, Crystal Palace, and Cinderella's Royal Table. They were all nicely done with very good food--about the only way the four parents could get to eat albiet with several photo/video op interruptions.
The kids loaded their autograph books at these places and were in bliss. They also ate which was nice because they sometimes didn't eat at other eateries.
Present at Chef Mickey's--Goofy, Donald, Mickey, Minnie, Chip & Dale.
At Crystal Palace--Pooh, Piglet, Tigger, Eyore.
At Cinderella's on 4/9am--Belle, Mary Poppins, Snow White, Cinderella & Prince Charming (who we found out has a first name of Tristan--never knew that before! He didn't know his brother's first name--y'know the one hitched to Snow White).
Hope this helps. Have a great trip!