AAdvantage is the frequent flyer program for American Airlines. It was launched on May 1, 1981, and it remains the largest frequent flyer program with over 67 million members as of 2011. Miles accumulated in the program allow members to redeem tickets, upgrade service class, or obtain free or discounted car rentals, hotel stays, merchandise, or other products and services through partners. The most active members, based on the amount and price of travel booked, are designated AAdvantage Gold, AAdvantage Platinum, AAdvantage Platinum Pro, and AAdvantage Executive Platinum elite members, with privileges such as separate check-in, priority upgrade and standby processing, or free upgrades. They also receive similar privileges from AA's partner airlines, particularly those in oneworld.
Prior to beginning this design sprint, we had already created a basic style guide, that we called the foundation. This foundation loosely defined our typography, colors, icons, spacing and information architecture. The foundation proved essential for guiding our work in a unified direction while allowing room for us to individually explore creative design solutions. This way we felt that we were all working together, towards the same idea. Reviewing our collective work at the end of each day, we began to see patterns emerge. We course-corrected when necessary, and started defining our standardized components.
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Some cities have restrictions on subletting for a short period of time. Airbnb has published a list of regulations and requirements for cities in the United States. In some cities, collection of a transient occupancy tax by Airbnb is required. In many cities, hosts must register with the government and obtain a permit or license. Landlords or community associations may have restrictions on short-term sublets.