Yes you can.
only way mine gets washed
I don't recommend washing a Cabrio in an auto wash.
ok cool thanks and it wont damage anything and mines the hard top version with the panorama roof and do u guys us any special cleaning stuff to detail your car and stuff if u do let me know please
Any of the brand name washes and waxes will work. If you want a really smooth coating try RejeX; for the pano roof just avoid any chemical washes (normal car wash liquid is fine) or you can try Plexus plastic cleaner. RejeX and Plexus are available online.