We have found that most people try to watch from Main Street. Since it ends in Frontierland, we usually find space to watch at the end of the parade. By doing this we do not need to go as early to find seats and can ride more of the "better" attractions while everyone else is waiting for the parade to begin. It takes a while for the start of the parade to get all the way to Frontierland which really gives more time for rideing BTMRR, and SM.