No, and I am afraid I am going to contradict BC's advice - dont carry them when they are outside, they can't pick up the scent of getting back home then. It is amazing how they know home though, I live on a quiet street and we dont have gardens, I took one of my fosters out on a lead, she pullled it out of my hand and knew exactly which house to go back into, despite it being her first time out.
This is absolutely true!! NEVER carry a cat on its first jaunts outside - their primary means of finding their way back is via the scent they have laid down - a 'trail' if you will. Just imagine if you wanted to mark a trail so you could return, and someone picked up all the markers you had laid then carried you back ... you wouldn't have much of a clue next time, would you?
You don't need to limit the distance they go first time out, either. They will go as far as they are comfortable, which isn't far the first time anyway. Nerve wracking for us humans, whose sense of smell is rubbish - we just don't understand.
I think we cat slaves have become ridiculously cautious about 'first time out'. Cats know better than us, in this instance. THEY know where they are in relation to where they started out, even if YOU don't! So long as they have something to come back for, they will
So it's more a case of ensuring that the cat is fully comfortable in the new home, has established its own spaces there and, obviously, gets food and cuddles there as well! So long as that is the case, it doesn't matter if you let it out after 2 months or 2 days. My best friend's cat Tigger moved with him recently, but of course all his stuff was in the new home, with all the familiar smells, so my friend wasn't too fussed when Tigs went to explore the neighbourhood on the second day. Sure enough, he was back within half an hour, ready for his tea. And Tigs is not the sharpest tool in the box, either. Another friend of mine has moved frequently over the last few years with her cat Sunny, as well as having to leave Sunny at her sister's place with her three cats on occasion. At no time has she ever kept Sunny in, even when she has moved only a few doors away. Sunny has always come back. Really, they are not as daft as we think they are!