My son was 18 months when we went in November. The first (full) day we kept his normal schedule. Breakfast at 7am, lunch at noon, back to the hotel for a nap after lunch, supper at 6, back at the hotel at 8, bath and bed. Result: the morning was fine BUT he was overstimulated and couldn't fall asleep for an hour at naptme, he slept an hour past his normal time, and was excited again when he woke up, which caused him to fidget through supper and, and he wasn't sleepy at bedtime. The next day, we decided naptime had to go. The excitement of the day was too much for him to nap through.
We spent the rest of the week with this schedule:
8 am breakfast in the room with disney tv on, he took a proper bath in the morning with me.
parks from opening to lunch
midmorning break (30 minutes) at the baby care center (a GOD SEND!! My older girls ould watch TV, it was quiet, and there was far less stimulation.)
lunch at the parks around noon
parks until supper
mid-afternoon half hour break at baby care center
supper
he usually spent the evening in the stroller, he liked the lights and the fireworks, etc.
snacks around 8pm (something with sugar in it, typically)
we left the parks at closing, he was asleep in the stroller and on the bus
back at the hotel, he was so tired he slept through us nekkiding him up, wiping him down with baby wipes, changing his diaper, and getting his jammies on. He slept all the way through the night.
a few tips:
1. we did a wipe down in the evening, a fresh bath in the morning got him ready for the day, rarin to go.
2. we made sure to alternate rides he could go on with ones he couldn't, so he never was just sitting in the stroller for hours on end, and he also got a decent rest in between rides. We also got a cheap
walmart umbrella stroller that reclined and had a shade for like, $30. Worth every penny. When he fell asleep, we just dropped him into recline, draped a blankie if the sun was in his eyes, and did the big rides we would have had to baby-swap anyway.
3. We made sure to visit the playgrounds at least twice a day. Helped shake the energy out of his body instead of just tiring out his mind by staying up late.
4. We used our money's worth out of those baby care centers. They were fantastic.