Just enjoy the parks, don't waste time trying to find out "the Dream Code". We were lucky enough to win lanyards during each of our last two trips. We were getting of Rio Del Tiempo in October and getting into the fire safety exhibit in Epcot. It is totally random. See what you want to see and if you are in the right spot at the right time, it will happen. My father is a fireman and the kids have seen/heard plenty about fireman/firetrucks/ect. but they wanted to do the fire exhibit and we won. If it were up to me Grandpa could have taken them to his firehouse to see the truck, but we did it anyway and were rewarded. Just follow your families pland and enjoy instead of trying to hunt down the dream Squad.