no
Unless it is a service vehicle that is in use for maintanence, you should never park directly in front of an aircraft.
It is illegal to park a car in front of a fire hydrant.
If the guest is expected and there are no parking restrictions in place it is appropriate for the guest's vehicle to be parked either in the driveway, or in a designated parking place in the street in front or close to the house. If there are parking restrictions in place, it is important to find legal, appropriate parking for their vehicle.
No
No, one can not park a RV in front of your house in Seminole County, FL. There are several RV parks in the county where one can store the RV.
If it is sitting in front of a house it can't really be considered hidden. The owner of the vehicle (unless a court has issued a warrant for the owner or seizure order for the vehicle), can park the car wherever he/she chooses. I see no reason why anyone else needs to get involved. There aren't any laws being violated by not reporting the alledged "wanted vehicle."
They may not have enough space in front of their own house, or they find it more convenient to park in front of yours. Communication with your neighbors could help address the issue and find a solution that works for both parties.
If it's a refuelling truck I'd park it just in front of the wing.
To the right.
That depends on the local ordinances where you live.
when the vehicle is in park and the door is opened the vehicle should neel down allowing for easier exit