Really can't understand people's desperation for ressies for this dessert party/fireworks viewing.

The 'only' thing I can see is the guaranteed spot to view the fireworks - and it's not a good view.
Several years ago (before party) dh & I decided to watch from that point - we were so disappointed not being able to see 'all' the fireworks, we left for a better spot. Could not believe our ears when we found out Disney was going to charge big bucks for the 'privilege' and people were flocking to it!
We've tried different locations over the years, but front and center of castle is the only place we'll view from anymore. If we can't see/experience the whole thing, we'd rather not see any (the same for outside the parks also).
I know, it's to each their own!!

We all have different expectations.
I agree with pp - if you are going to pay, the Plaza Garden is 'much' better viewing!