I have a question about food options at CTI on Sat nite - did I read the dining web page correctly ?

From my read, the following are closed on Saturdays (Bayside, Verandah, Patio). The pool grill and veggie bar close at 6PM, also according to the dining page.

That leaves 8 rivers exclusively for Saturday night dinner....

We are most likely arriving on Friday - does 8 rivers have the capacity to handle the entire resort for Sat night dinner ? Would we even be able to get a reservation for Sat dinner since we arrive on Friday ? This does not compute for me....can anyone please clarify ?

Thanks !