Halloween in the US sounds so much fun. I don't know if it's just my area or if it's the majority of the UK but people don't realy decorate much. You see the odd house or two with decorations up.
Can I ask, those of you who have mentioned the door being open do you mean the front house door? If I left my front door open my kids and dog would be straight out.
The only time I've seen doors left open is when they have both a regular door and then a storm door; people will leave the regular door open but have the storm door closed.
I'm in the US and I wish you could see my street at Halloween. Almost every single house is at least somewhat decorated, but there are a few people that really take it to the next level. My next door neighbor spends the whole week before making an elaborate display in his yard. One woman a few doors down has every square foot of her yard decorated, including things hanging from the trees. It's so bright you can see it from several blocks away. And the weird thing is that almost every house has this one decoration that's the same - this big light up pumpkin. I bought one just because I felt like I had to to fit in to our neighborhood. However Christmas is when my street really goes crazy; every single house is lit up, even the old cranky neighbors that never talk to anyone.