Airport Service: OxygenWorldwide provides in some countries a Airport Service. Please contact us for availability at This email address is being protected from spambots. You need JavaScript enabled to view it.. An Airport Service means that someone who is authorized to meet you at the door of the aircraft will hand you your pre-rented oxygen device. This can be a stroller (portable liquid oxygen unit which enables you to get to your holiday address where we have already installed the main liquid oxygen base unit for you. When you return home after your stay you we will meet you again at the door of the aircraft to collect the stroller. Please note there is an extra charge for this service each way.