Fall travel alert: Whatever you do, don't do this!

Here's one thing you absolutely must not do when you're on the road

Illustration by Christopher Elliott

There's one thing Jerry Slaff won't do when he travels to Edinburgh and Dublin this fall: complain.

"We're hoping to avoid the big push of summer tourists by going in October," says Slaff, a playwright from Rockville, Md.

But if he doesn't — if he gets stuck in a long line or has to fight the crowds at the Scottish Natio…