The defender spent six years at the Ashton Gate club and he is looking forward to returning to his old stomping ground, but he knows that the task ahead will be as tough as the ones faced so far this season.
Bristol City are strong on home soil having won both their league games played this season as a 4-1 win over Crystal Palace was followed up with a 4-2 win over Cardiff City, leading Orr to believe Rovers will have a battle on their hands.
"What we've got to deal with this season at Championship level is that we are going to be a scalp to a lot of teams," said the defender.
"So whatever ground and whatever club you go to they are going to turn up in numbers and hope to see their team do a number on us.
"So we have to deal with that throughout the season I think.
"Newcastle did it when they came down and got promoted, every game for them was like a cup final and they dealt with it well and they got their rewards at the end of the season.
"We've got to model ourselves on that and go to away games expecting it to be a cup final atmosphere if you like and we've got to deal with that.
"Blackburn is a big club and it is a scalp for people and obviously looking at the squad that we've got, so anyone who even takes points off us will see it as a good result so we've got to deal with that right throughout the season and deal with it quick.
"We've lads in that dressing room who you can draw experience out of and can talk to. The lads who have been there and done it at top top levels.
"Whenever you ask those types of players, like Danny Murphy, Paul Robinson, and David Dunn, whenever you ask them for any bits of advice they are always so keen to help and that is so good for the younger lads in the squad.
"There are a lot of young lads mixed with the experienced ones at the minute and they might not have had to deal with such hostile atmospheres like Elland Road, we are playing for big points now so any experience that those lads have got and are willing to pass on is vital."
Tickets will be available from Ashton Gate on the day of the game priced at £25 for Adults, £20 for Seniors 65 and over, and £12 for Juniors aged under 16.
For supporters who aren't travelling to see the game, listen to full uninterrupted commentary of the match on Rovers Player