Here's one big reason RV travel is less expensive than other forms of travel: all the money you can save by not eating in restaurants. At a time when the price of a typical fast-food meal can run more than $5 per person, the money you would need for eating out for every meal quickly adds up. And don't forget the high cost to your health and waistline of all those burgers and fries. Many people also find it difficult to follow special diets when faced with restaurant menus for each meal. Cooking in an RV can be a challenge, but if you plan well, it can be a fun activity as well.