Summer Vacations Are Selling Out Fast. Hereâs How To Outsmart The Crowds Demand for travel is sky high but many top hotels, resorts and rental homes are already booked for the season. Hereâs where to look and what to book instead. In a normal year, planning a summer vacation weeks before Memorial Day weekend would leave a traveler spoiled for choice. But as the country awakens from its Covid-19 hibernation, this season is shaping up to be anything but normal. âThe pent-up demand is real,â says Betsy OâRourke, CMO for Xanterra, the countryâs largest national park concessions management company. âWeâve all been sequestered for a year, and many of our guests have saved money, so the desire to travel along with the funds to pay for it are combining for a swift recovery for our cruise, tour and train brands.â