Hard to control where trolls want to spend time when it comes to Public spaces. One advantage to having them at the Cantina is that the space is busy and management can't say it's underutilized.
Maybe when the new beach is here they'll go there. Not like I'd like to see that but you never know.
And if they are, Ignore, Block, Report and/or leave. Don't even say anything to them. And if you do, do so politely and respectfully. But don't allow it to turn into an argument. Don't become like them.