Wanting to spice up our sex life, but I'm too paranoid.

My husband and I have talked about this on several occasions and I am starting to consider it more, but I'm still very paranoid.

One of the scenarios we have discussed is having sex on our balcony late at night. We live in a 3rd floor apartment. Our neighbor could see us from their balcony (through our side railings) if they went outside. There is a small chance the apartment building across the street could see us (through our front railings) if they went out on their balcony. Simple solution would be to drape a blanket or something over the ledge and then there would be no way of anyone seeing, but again, I'm paranoid.

Another scenario we have talked about is having sex in his truck. He is getting the windows tinted on his truck soon. He's getting the law enforcement tint, so it would be nearly impossible to see inside the truck, especially at night. He wants to go somewhere secluded at night, but I'm so afraid of getting caught.

We have done everything we are willing to do to spice up our sex life inside our home, so this is the next step that we really want to take.

Any advice?