I always used a cat net, so no danger from wasps, cats, foxes or other wildlife. no wolves, bears or lions in suberban uk
In the back garden, near the back door, where I could see and hear the pram from the window. Twins slept soundly, what's the problem?
And yes, I used reins, as does my DD with the DGC.
Fresh air is good for you, being kept in a stuffy closed environment all the time isn't.
Of course, if you don't have a garden or live in an area infested with killer ants or something it's different for you.