Why did they change the title of Mel Gibson’s Get The Gringo?

Notorious racist Mel Gibson has a new film out, both here and in the US. Here, it’s called How I Spent My Summer Vacation and its tag line is ‘Plan your getaway’:

How I Spent My Summer Vacation

But over in the US, it’s called the much-catchier Get The Gringo but has the duller tagline ‘The odds are against him. So is everyone else’:

Get the Gringo

The question is why? Did they think the UK public was going to be less open to movies featuring Mel Gibson with racial epithets in their titles? Why is it ‘vacation’ rather than ‘holiday’, except to avoid possible Cliff Richard connotations?