hi! i'm travelling with 4 adults and one kid (2years old)., we'll be arriving in HKIA at aroung 1 am. since, we're planning to just sleep and rest in the airport until 6-7am before going to our hotel( shamrock hotel).since our check in time will be around 2 pm.we're just planning to leave our baggage in the reception and walk around tst and be back for chek in time. Is it ok to just stay in the airport? where exactly can we sleep and rest? or do you recommend that we should just book another cheap hostel to stay? and if we stay in the hhostel, is it safe to ride the N buses going to the hostel? thank you!