It is surprisingly easy for a travel budget to grow when several small expenses are added one by one. Fuel, meals, parking, accommodation, activities, and transportation can all take a share of the budget, especially on a road journey. Travelers can check the Mexico Land Card Fees information and include the relevant amount when calculating the overall cost. I’d keep a little money aside for unexpected expenses rather than using the entire budget for planned activities. That gives you more flexibility if plans change during the trip. Having a realistic figure before leaving also makes decisions easier, since you know how much room remains for sightseeing and other experiences.