This Friday night, the hottest table in town is at . . . Ikea? Yes, you read that right. As it does every year to celebrate the Swedish holiday of Kraftskiva, the discount designer furniture mecca will close its restaurant at 2:30 and serve an all-you-can-eat crayfish buffet for just $9.99 a person. At a price like that, spots at the three seatings are filling up quickly and tickets can only be purchased at the restaurant itself, so get over to Red Hook before it’s too late. After gorging on crustaceans, you might just have enough money left over to splurge on those Expedit bookshelves you’ve been eyeing.