is the queen a part of theme park attractions?
Yes
Evil Queen (Disney)
The Queen is a primary character in the Disneyland rides Snow White's Scary Adventures (first opened in 1955), where she is seen more than any other character in all four versions of the ride, recreating a number of scenes from the film, sometimes including the torture chamber from an abandoned concept, with "a few skeletons of her past victims." 
who voiced the evil queen in snow white Lucille La Verne.
wiki:19338388
Evil Queen (Disney) [SEP] Disney theme park attractions
The Queen is a primary character in the Disneyland rides Snow White's Scary Adventures (first opened in 1955), where she is seen more than any other character in all four versions of the ride, recreating a number of scenes from the film, sometimes including the torture chamber from an abandoned concept, with "a few skeletons of her past victims." In one new scene, she turns into a hag while standing in front of the mirror (back to the visitors) and intoning: "Magic Mirror on the wall, with this disguise I'll fool them all!" She also appears in her hag form at the roller coaster Seven Dwarfs Mine Train, first opened in 2014.