To help out ItsNotEasy, who is doing a wonderful job of talking down the Hibs support here, and just off the top of my head, the last 5 away games I've been to were all sold out away ends & none of those were Ibrox or Tynecastle:
Ayr United Away = 3000 sold out
Celtic Away = 7000 sold out
Tannadice Away (first game) sold out behind the goal, new stand opened up for Hibs support (also sold out)
St Mirren away (sold out)
St Johnstone away (sold out - full stand behind the goal and half of touchline stand - all sold out)