Walmart tents make it easy to take your family camping while staying within a tight budget. Consider a low profile tent for those with disabilities. These tents are easier to move and allow you to easily walk inside. You and your family will enjoy a large amount of floor space. One square foot will allow you to fit an air bed, a sleeping bag, as well as all your personal gear. However, you'll need to stoop down if you plan to get dressed inside of your tent. In general, 25-30 feet is enough.