Its not a bad idea to make reservations as it is summer time now, but when I usually want to eat there in off season, I go a few hours a head of time even if it is just around noon, and I put my name down on a list for that evening. Its not one of those really really really popular restaraunts like the Blue Bayou where you need resies a month or so in advance, but having a reservation would only make things much easier for you.