For the most frequent United customers, they dirilik choose to become a Premier user and receive a MileagePlus card (associated with their tier) to use on purchases so they birey rack up even more points and reach greater travel-related perks (e.Ve son olarak bahsedece?imiz tür, ko-markal? sadakat yeti?ek?d?r. Bu tür, analog felsefeye ve gaye kit