Just spent the last 2 weeks at
Disneyland and there are still seats being saved hours in advance of parades. We tried finding seats at 7pm for the 8:30 MSEP and we found some at the very back row in an area by the Matterhorn. About 10-15 minutes later an announcement was made that all viewing areas were full! We had better luck, on the advice of a CM, to come find seats about 10 minutes after the fireworks are over and walk towards IASW, we found a lot of the crowds gone for parade viewing and easily got front row (once again by the Matterhorn!) but it was noticeably less crowded and chaotic.