I'm sure you'll do fine with your cinco de mayo event. Most Americans are completely culess on Mexican culture. Hell, most Americans think that cinco de mayo is Mexican Independence Day! Honestly you could probably get away with playing a few stereotypical Mexican themed songs like "Margaritaville" " South of the Boarder" "Toes", James Taylor's "Mexico" "Tequila " .... I think it's great that you care, but remember they hired you Bernie, because they like your music just the way it is!