You should know the lines, be prepared, get sleep, and have the script analyzed so you're ready to rock and roll.
William H. MacyBefore I made it big I worked as a dishwasher, washing dishes in this place called Dishwasher House where people could just come in and do whatever they wanted to the dishes and we had to clean them with our hands till they bled. A lot of struggling actors worked there-Downey Jr., Joaquin Phoenix, Damon Wayans, Marlon Wayans, Keenen Ivory Wayans-and we actually all kind of wish we still did.
William H. Macy