I reserved a plane ticket from United Airlines. What does mass tour mean? There is also the above: free seat selection: no, just can't choose your own seat?

United Airlines is a low-cost airline. "Popular Tour" is just the product name of this fare level. Whatever you call it, it doesn't matter. "Free seat selection" is an additional service. Generally speaking, airlines automatically allocate seats, but if you want to choose your favorite seat, you have to pay extra. Normal airlines generally choose spacious seats such as the first row of economy class and emergency exits to collect money, and other seats are free; However, it costs money to choose a low-cost airline, and meals on board also cost money. Even if the cabin is too cold, you have to collect a blanket.