Hi, i will be arriving at Beijing international airport at 4pm

however my flight is not until 1:30am next next morning. It is not a connection, my tour finishes at 4pm and drops off at the airport. i will have a large suit case with me. Does anyone have any information on where i am able to sit and wait for my check in time? or if i am able to go through security and go into the eating area? but not through customs? Thanks you.