OK. I'm babysitting tonight while DW is having a well deserved night out. We have friends who live directly opposite us across the road and its a small road. Our baby monitor works perfectly in their house. They suggested I pop over for a drink. Mentioned this to DW and it was an absolute no-no.
Thing is, I would be about the same distance from DD as if I were at the bottom of our garden. If she woke, I could be back within 30 seconds. Is it so bad? There's no risk of a fire or anything like that so I don't really see what the issue is beyond the psychological difference of being out of the property.
I should add that I agreed with DW that I would stay in tonight and so will not go out but I'm curious as to what people think as a matter of principle (possibly for future reference).
By the way, they have a DS and no baby monitor so couldn't come over here.