We went with our 2 year old last year and the first half of the trip went well for the most part. We rope dropped the parks each day, which I recommend to beat the crowds, but we went back to the resort around noon or 1 each day which worked well for naps. It was the late night at MK for the fireworks that seemed to throw everything off, because we still tried to go to a park the next day. She seemed to be tired and cranky the rest of the trip. I would still recommend going to the fireworks, but have your off day be the next day to allow the kids to sleep in and recover.