A record number of Americans are expected to travel this Memorial Day long weekend . If you’re planning to be among them, travel experts are advising taking some important steps to prepare for the busy holiday. About 45 million people are likely going to travel 50 miles or more from their homes over the long weekend, according to AAA’s forecast . Of those, 39.1 million are expected to travel by car, and 3.66 million are projected to fly. The forecasted numbers mark a slight increase from last year, when 44.8 million people traveled during the Memorial Day long weekend. “Memorial Day marks the unofficial start of summer, and for most Americans, it’s a three-day weekend,” Stacey Barber, Vice President of AAA Travel, said in a statement. “Travel demand remains strong, and despite higher fuel prices, many people are prioritizing leisure travel during holiday breaks.” Here are some tips on how to dodge the crowds and keep travel costs down.…