At Grinchmas at Islands of Adventure, the popular Dr. Seuss book ÒHow the Grinch Stole ChristmasÓ is brought to life in the heartwarming live stage show, ÒGrinchmas Wholiday Spectacular,Ó starring The Grinch and the Whos from Whoville. Grinchmas is part of Universal Orlando ResortÕs Holidays celebration, running from Dec. 3 to Jan. 1 and featuring live entertainment that the whole family can enjoy.