Yes. The entire Hollywood Casino permits smoking except for a non-smoking slot area that is present at the back of the casino under the Turn-2 Sportsbar. The three main restaurants in the casino, The Buffet, Final Cut, and Epic Café, are non-smoking though.
What is the age requirement to enter Hollywood Casino?
You need to be at least 21 years old to enter Hollywood Casino. You cannot even visit the restaurant in the casino if you are underage as all the restaurants are on the casino floor.