I can understand Robearjr’s reasoning. If you are reviewing a local place, it is easy to visit it several times over a couple of weeks to check out the food at peak and off-peak times, during the week and on weekends. If you are on a road trip, unless you are going to eat all your meals at just one restaurant (even if this is in your destination town), it is much more difficult to do multiple reviews at various times and under various conditions. And if you decide to do your review based on visits weeks or months (or years) apart, other variables can enter the equation (change of ownership, change of cooks, etc.) Therefore, you are more likely to write a review based on one visit (especially if you were impressed with the restaurant) if it is not in your home area.