We've changed our party strategy to watch the first parade the last few years and I feel like it's worked out better for us. We find the 2nd parade isn't much less crowded than the first anymore especially because Disney put a notification in
MDE telling people they should watch the 2nd parade lol. Plus, we find the lines for treats and characters (probably rides too but we never do them during parties lol) really empty out during that last 1 1/2 hours of the party so it's more enjoyable!