We're hoping to get to the beach for two to three days and have always rented a home or villa at the Isle of Palms or Wild Dunes. We could have as few as 4 or as many as 10 people. We are looking at renting in mid-late July are there any suggestions regarding places to call for availability? Should I look into last minute cancellations? I've checked VRBO and have been a little discouraged.