Some last-minute ideas for Thanksgiving dinner include the Maidstone Hotel in East Hampton, where a four-course prix fixe meal is being served up for $85, $40 for children under 12, from 11 a.m. to 8 p.m. In Southampton, Tutto Il Giorno will also be open on Thanksgiving with a prix fixe menu for $65 that includes a choice of baby kale Caesar salad or a baby artichoke appetizer, wild mushroom tortelli or roasted turkey pastilla as an entree, and carmelized pear crostata or pumpkin semifreddo for dessert.