Is sex outdoor allowed in islam?

Dear anyone who can help me, I want to know if certain outdoor practices are allowed with my wife - sex in car but in empty location (eg-parking lot...) and fully covered - sex in the backyard or beside the swimming pool area in a private villa or own house as walls are high and private - creating a tent on an empty beach,land or desert with privacy and performing - (indoor) having intimacy (at least like kiss and cuddle) whenever staying at (my or her) grand(family) house whenever family is staying but done behind locked doors. thats all for now as i got a doubt about this topic, sorry for asking such question. (BTW i **do not** need any **narration** and **inverse answers**, only direct with reasonable definition) and can she wear frock in home or in my outdoor house premises? jazakallah