There's a window when grandparents can still keep up, and kids still want to come. It's smaller than you think, and it's the real reason to stop calling this trip someday.

Whether it’s an active group of friends sprinting for trains in Switzerland or a multi-generational family cruising the Mediterranean, the secret to a flawless European vacation is the same. Here is how we design custom travel paces that work for every group style.

If you're planning a big multi-family trip and quietly wondering how everyone will travel together, there's a way to find out before you commit. Here's how a short cruise answered that question for us.