You will have no trouble finding characters, but the "face characters" are much more difficult. Here are some suggestions to find your child's favorite:
1. Read your park brochure carefully -- it'll list places you can find characters. For example, it'll give several times when Belle can be found in the rose garden behind the castle. She'll be reading her book, and it's a lovely little show.
2. When you sit down to rest, look around for out-of-the-way doors that open into small, enclosed courtyards -- I'm talking about unmarked, plain picket-fence type places that look like they could be the "backyard" of a store or restaurant. Characters often emerge from these little courtyard areas. If you happen to be there at the right time, you can be first in line!
3. Ask a cast member. They have amazing information on who will appear where.