Getting ready for new day care

Lily will go to a new "school" starting next week, and we are trying to prepare her for the new place (including the fact that she has to be potty trained and no more diapers, oh oh!). We are excited for the new place, but it will be a big change, since they are very structured and (asumingly) follow strict guidelines about everything (which could be good?), including which cartoon characters she can have on her shirts/bags/etcc (no sponge bob, spiderman, superman - all too violent). But the new day care is in a brand new building, with great teachers, and a great program, and we really hope this will work out for her.