Benjy!
That car is the shiniest car I've ever seen!
Congratulations and enjoy...although I know how you feel looking at your new pride and joy after driving in these conditions for a few miles - the only time I've seen my Porsche clean was in the dealer when I picked it up....it now looks like a heap!
That iPhone / Comand compatibility thing is a right pain - I was very lucky as I had an iPhone 3G with a cradle when I bought my C63 so imported my contacts in the only way possible (using the cradle). When I got the iPhone 4 I could never update the contacts unless I typed them into the car manually - here's hoping MB update their software pronto!
With regards to number plates, I know what you mean - some MB dealers just screw in the plates leaving the screws exposed (as your dealer appears to have done). The dealer I bought mine from used proper licence plate holders which are also more secure as it's harder (although not impossible) to steal the plate. The exact ones used on my car were the ones behind this link:
German Number Plates and License Plates
They're very easy to use - unscrew the plates, screw these puppies on then clip the plate into them and fix shut. They're cheap as well...get them ordered!
Continue to enjoy mate....this is just the start