For the boot opening:
it's dead centre of the car, and the action is to swing your foot forward under the boot as if you were kicking a ball.
First few times you will panic about bruising your shin (or denting the bumper!), but you'll soon get over it.
Occasionally - if you're a little too far from the car when you swing your foot - the boot will open but then the alarm will sound forcing you to fumble for the keys to shut it off. Defeats the object somewhat
Looks fab, the EB is growing on me too but I'd probably go for Tanzanite if I had my time over again. Got the mineral grey to cut down on the washing (last car was black)