u/Artistic_Broccoli509

Hi everyone! I’m flying to London to visit my boyfriend, however my flight back is at 7am and there is no train going early enough from my boyfriends place that I could make that flight without staying at the airport but I also don’t really want to book a hotel for 5 hours. Is it possible to stay at the airport overnight? I would get there at around 0:30 also is it possible for my boyfriend to come with me even if he doesn’t have a boarding card? Thank you in advance :)