It can be done. I used to do half days with my toddler when I had a season pass.
For a toddler I say yes. Because the rides they can ride on move right along. Where are you coming from? A good option for toddler aged children is Dutch Wonderland near Lancaster.
Yes have done it with more then one, as long as a long day is okay
Yes if its not crowded.
Thanks! Your answer is awaiting moderation.