There is something very special, very iconic
Disneyland, about Blue Bayou.
Ask for a water table - it will be a bit more of a wait, but if this is your one time only reservation restaurant, then it's worth it.
Be forewarned - if you order the Monte Cristo (which they're famous for), it is a large serving. We all ordered it (3 of us) and we could have very easily just ordered two servings and had enough to eat.
The gumbo...out of this world.
And in case you haven't had enough of the gumbo and the Monte Cristo...Cafe Orleans (also a reservation restaurant) also serves the exact same sandwich. We loved it so much we ate there and ordered it again.
Then again, we don't get to Disneyland often, so we tried to get our fill of it!