Do I need a reservation for 12 people?

I would definitely book for a party of that size

So if they don't take any reservations for 12 people there is not going to be a problem If I bring my whole family right?

You would need to contact restaurant for more details but I would say yes you would need to make reservations if they take them

Hi Elida! Unfortunately, The Cheesecake Factory doesn't take reservations.

Probably