??? as to references - how strong are your others? up to you . .
I'd list 'conversational' not 'fluent' Spanish. The big RCCL ships have 2 DJ's - one for the disco and one Latino. Most of the club DJ's seem to be bilingual these days . . .
You can make your "objective" and "summary of qualifications" areas your cover letter info. Regardless of the gig, someone should be able to look at your resume for about 10-15 seconds and know what they need . . .