We go Memorial Day weekend every year and stay through first weekend in June. The Gay Days normally start on Thursday with a designated park each day through Sunday. Saturday is always MK day, so just avoid the park of the day and you can avoid most of the crowds. It is a busy week, most Southern schools are out prior to Memorial Day, but not near as busy as July. Last year, it was rainy from mid-week through the weekend. We still had a great time, take advantage of the pool or water parks on sunny days. You never know when the rain will move in and whether it will just be a shower or set-in for the day that time of year.