<P> There is an increasing trend towards more streamlined checking - in processes, whereby passengers can bypass or reduce the time in queues at the staffed check - in counters . This may involve passengers checking in online before arriving at the airport or using an airline's self - service check - in kiosks at the airport . Some airports have curbside check - in, where passengers can check in their bags to an airline representative before entering the terminal and then proceeding directly to security . </P> <P> Many airlines have a deadline for passengers to check - in before each flight . This is to allow the airline to offer unclaimed seats to stand - by passengers, to load luggage onto the plane and to finalize documentation for take - off . The passenger must also take into account the time that would be required for them to clear the check - in line, to pass security and then to walk (sometimes also to ride) from the check - in area to the boarding area . This may take several hours at some airports or at some times of the year . On international flights, additional time would be required for immigration and customs clearance . </P> <P> At hotels or similar establishments, guests are usually required to check in (also called register or sign - in), which involves providing or confirming the guests' personal information and providing a signature . The laws of some countries require guests to sign a register (or a registration card) and some also require the provision of identification documents, such as a passport or drivers licence, which the hotel can copy and retain for its records . Usually, only one guest per room is required to register . Sometimes, the register may need to be provided to a government agency, such as members of the police, sometimes with a court warrant or similar authority . </P> <P> The establishment may require guests to provide a credit card guarantee to cover potential costs such as room service or mini-bar for the duration of the stay, and to enable an express check - out at the end of the stay . At the end of the check - in, the reception staff will provide guests with a room key . </P>

When does the guests arrive at the hotel