No time to post yesterday, as it was rather a stressful day. The entire morning was taken up with work, which I struggled to get done in time - I finally got it finished at 1.30 pm (the girls got home from school just after 12 so, apart from giving them lunch, I more or less left them to fend for themselves).
After 10 minutes to have lunch myself, it was then off to school enrolment. As I'd expected, DS was very clingy - he started crying and hiding behind me as soon as the headteacher started talking. The children were all then put into groups to go round the six Stationen doing the various activities, but DS wouldn't leave me; fortunately the head said it would be OK for me to go as well. First Station was the gym, where they had to do climbing and three or four other activities. DS refused to do a single one of them. Luckily he did get more confident as the afternoon went on and managed to sit at a desk on his own (I stood at the back) in the other classrooms, so I'm keeping my fingers crossed that he'll be OK to start. All rather stressful, though - I had to spend two hours going round the school while all the other parents had coffee and cake. 
Thatis It must be something innately American, as all the American mothers I knew would say "good job!" to their children whenever they did... well, anything that you wouldn't tell them off for, really. I wonder what book she's using. That's also quite shocking about the mother locking her two-year old in the cupboard. A friend of DH's in Germany said he locked the children in the cellar if they misbehaved, but I'm not sure how serious he was being. Saying "Geh, [name of child]" seems to be a favourite method of discipline here (the only form my SIL uses, as far as I can tell).
DD2 is really enjoying writing to your DD btw; the first thing she asked when she woke up this morning was whether there was another message from your DD!
Nohun No idea about Frankfurt either, I'm afraid, but we had a discussion about online grocery shopping on the thread a while ago and I'm sure it doesn't exist in Germany. I think someone mentioned being able to have drinks delivered, though.
Gator I have impacted wisdom teeth, but they rarely cause me any problems and the dentist has never suggested having them out. I'm hoping I won't need to now as I went to see a dentist (or was it an orthodontist?) about them in my twenties, who said that it would be a much more difficult job to remove them in my forties as the bone is harder then.
silken I heard somewhere that if you don't have problems with your teeth, you only really need to go to the dentist's every two years. I force myself to go every year, but I hate it - silly really, as I haven't needed to have anything done for nearly 15 years, but I'm always petrified that the dentist is going to find something.
admylin My mum isn't a huge fan of boys either and I know she would have been disappointed if I'd only had boys - she told me two girls would be fine, as would a girl and a boy. 
They weren't exactly over the moon about me having a third (silence was the reaction we got when I told them that no. 3 was on the way) and my mum recently told me that she'd had a dream where I'd told her I was expecting a fourth and she told me that we'd no longer be welcome to visit them!
Canella of your child-free trip back to the UK. It's so difficult when you don't have reliable grandparents to help out, particularly as almost everyone else here seems to. We're looking after a friend's DC next month while they're in Spain for three days, so DH is hoping they'll return the favour and is already looking at hotels!