Oh I hate that feeling. I was there a week ago and had the same problem. I ran and ran fast. I'm not sure about the shuttle I feel like there isn't , but it's a pretty easy airport in my opinion. Hopefully you'll make it.
I don't think so but electric sidewalks help allot and they are all over
They have like this service for moving travellers between gates but 15 minutes?? They close gates before 15 minutes so you need to check before if they will allow you to check in
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