XLR/TRS to RCA? Adapters or cables?

Hi there,

I'm performing some live guitar and vocals at a upcoming wedding, and I'm going to be running them through my laptop and audio interface.

I'll be plugging into the DJ's little mixer (he told me he has a couple of RCA inputs spare).

My audio interface outputs are 1/4" TRS (balanced) and I have two TRS to XLR cables (which I use to connect my interface to my studio monitors at home).

So in order to connect my interface to his desk, should I just get a couple of XLR to RCA adapters to put on the XLR ends of my cables? Or is it best to get a couple of new cables (1/4" TRS to RCA)?

Or is there a better way to do this?

Many thanks in advance!

Elyssa