For those of you with speaking lines, especially Newsies, you'll need to practice a bit with perfecting a New York dialect. The higher up in society your character is, the less prominent your accent should be. Use the following videos to learn the key vowel sounds and consonant drops to help you build your character's New York dialect. Let me know if you find any better videos that I should add!
The first half of this video is great! The second half he reads a piece of literature-good for an example but not great to learn from:
This next video gives some similar tips as the previous one but gives more extreme sounds for the characters who need a stronger NY accent.