My first needs a screen to display the action My second serves as a pleasant distraction My whole may require your quick reaction
What am I?
video game is the answer
My first is a special delivery date My second, as the last course, you may await My whole, into pieces do you separate
My first, a business of one who can entertain My second, a structure one may use to contain My whole plays a low-tech programmatic refrain
My first, to hold liquid you might appropriate My second may be an agenda or a slate My whole tells you what to do before it's too late
My first, a condition for business affairs My second you may choose to leave to your heirs My whole may have strangers going up your stairs