Hi, I also have a 1 and 3 year old and have been to WDW with them this past January (and a million times before that) Where are you staying? What are the sleeping arrangements? During our last trip, we had a 2 bedroom villa at SSR. The boys and I stayed in one room while my parents and sister stayed in the living room and second bedroom. I made sure and rented a full size crib for the little guy and a bed rail for my oldest. The crib was an added expense, but he slept through the night like he did at home so that was worth it for me. There is nothing worse than being exhausted and having your baby roll around and not be able to sleep when you have to get up early the next day!!! I also rented toys for the kids (from the same company) so they would have something to do while we were in the room. You may think that you won't be in the room long enough, but believe me, you will not regret it. It will keep them busy while you dress, organize and pick up at night, etc. Make sure you have a good stroller that lays back all the way for naps. My kids napped in the parks after lunch in their stroller so we didn't have to go back to the room. My little guy ate off peoples plates mostly, I did pack some of those Gerber yogurt melts and stuff so he would have snacks. I used the baby care centers for breaks to let them play on the floor and just have some free-time. Some of the centers have toys to play with, others don't so make sure and packs some cars and small toys. Any other questions, just ask...I have a million tips.