tíqián bǎocún huíchéng jīpiào, jiǔdiàn dìngdān, yāoqǐnghán hé liánxìrén diànhuà, huì shěng hěnduō huāngzhāng

提前保存回程机票、酒店订单、邀请函和联系人电话，会省很多慌张。

Saving the return flight ticket, hotel reservation, invitation letter, and contact phone number in advance will save a lot of panic.