Alserrod  thanks for so much useful and practical info.  We’ll be in Barcelona just 2 nights in late May and we want to make the most of our time.  We have a 4:00 PM departure from BCN flying business on UA to the US.  How much time should we allow in the airport prior to the flight, including checking bags and VAT refund?  Is there any sort of fast track security lane for business class?  Is the VAT office or Kiosk easily accessed?