Preschools typically provide care for shorter hours and are closed for holidays, school breaks, and summer, though some may offer full-time programs, extended care, and summer options. This is about how preschool different from daycare. I would recommend to read about Kids Collective - http://kids-collective.com/. This preschool wide range of developmental activities, including creative, sports classes and so on.

Yes, I heard. But before I would advise to read some useful articles about preschool education in general: How to Choose a Preschool - http://kids-collective.com/blog/tips-for-parents-how-to-choose-a-preschool//, Why Is Socialization Important for Kids - http://kids-collective.com/blog/burning-issue-for-homeschoolers-socialization/