Jun 13, 2018. Summer vacations in the USA call for long days at the beach, boat trips on the lake and lots of time enjoying the great outdoors. But nothing. It’s time to plan your Summer 2018 vacation! Here are 12 exclusive summer vacation ideas all around the globe, the best times to visit, and how to book. Deciding where to take that long-anticipated, well-deserved summer vacation can be daunting….