I always use mid-term. Good location. Sometimes I do like to walk to the airport and always get irritated at how difficult it is to actually get out of the car park and across the road. I understand that, at present, pedestrians are discouraged probably because it is dangerous but it makes more sense to provide a safe route for those that want to walk to be able to get to the other side of the road without having to walk along a very muddy grass bank and to go for a while in the opposite direction because of the barriers. However, when I don't choose to walk then the courtesy bus service is great.