So every year since 2015 my favourite band holds a special Christmas concert in the Netherlands. I've wanted to go for years, and it's recently occured to me that I could probably go if they have one this year. But since I've never been abroad alone before, and this will be after Brexit, I'm turning to mumsnet wisdom to give me some pointers of stuff I'd need to think about/talk me out of it if it's a really fucking dumb idea.