I'd suggest calling the restaurant to see if they take lunch reservations.
Umm, I don't mean to be rude, but your question seems to be one to direct to the restaurant itself, and not this site. I do know that the restaurant can tend to get very crowded during the lunch hour, but, as has been noted, it is a very large place.
Same here - I am unsure, but it is a very large restaurant and I wouldn't have thought a reservation would be necessary.
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