Shouldn't be a problem. To be sure, find out which way the parade is running and be toward the beginning. If it starts on Main Street, be along Main Street, preferably near the train station. If it starts in Bear Country, be close to the beginning, and AS SOON as the last float passes, head into Adventureland, around the west side of the hub, and through the stores on the west side of Main Street (behind the Main Street crowds. There is a place at Town Square where you can cross the parade route (CM will let folks through).