What is 'Let's party' when translated from English to Italian?

Va' a mangiare! in the singular and Andate a mangiare! in the plural are literal Italian equivalents of the English phrase "Go eat!" The choice depends upon whether the speaker is talking with one family member, friend or peer (in the first case) or more (in the second example). The respective pronunciations will be "va man-DJA-rey" and "an-DA-tey a man-DJA-rey" in Italian.