My aunts and uncles have been known to make racist comments

Hi u guys. Got a family question. My parents are really cool but my aunts and uncles have been known to make racist comments. I want to bring my boyfriend to our big Christmas party we have each year. Everyone is staying in cabins next to each other out in Utah and it’s for 3 days. What should I say to my family before going or do I avoid going?

Marcie / 26 / Los Gatos, CA