Frankfurt neighborhoods, doctors, orthodontists

[STCan]

Hello, everyone! We just arrived in Frankfurt. I would appreciate advice on a few topics. We are looking for a safe neighbourhood in the Frankfurt/Mainz/Wiesbaden/Darmstadt area with schools that have support for kids with not enough German; preferably fairly affluent neighbourhoods. We cannot afford International schools but are considering the bilingual schools. We are Canadian, and my husband will work at the Frankfurt airport. This is a longterm move. Also, we are seeking a children's doctor that will take drop ins. We won't find a permanent apartment until at least September first, so I'm not sure what to do if we'll need a doctor before then. I've heard it's not easy. And I have the same concern about an orthodontist; can anyone recommend one that would see us in an emergency? Sometimes my daughter has minor emergencies with her appliance, and I'd love to know someone to call in that instance. I would appreciate any advice on any of the above! Thank you very much! :)

I'm not sure I can help much with the orthodontist/pediatrician but in terms of where to live, I'd personally prefer Wiesbaden to Frankfurt. It's smaller and also feels a lot less busy. There's also a bilingual school there (in addition to the international one).
Most of the cities are quite expensive to live in, unless you aren't too picky in terms of what you want. We moved in April and live about 40 minutes from Frankfurt. Property is a lot more affordable. I work at a bilingual school just outside Frankfurt and the commute isn't an issue. My husband works in the city itself and the commute is ok, too. We do live on a main train line, though.
I'm not sure what you mean with looking for a pediatrician that takes drop ins? I simply looked up the closest pediatrician and went to register DS a few weeks after we moved and once he had his healthcare card. To get an appointment, I just need to ring them up. I would think it's the same with the dentist. There is an emergency dental service for when the normal dentist is closed (i.e. weekends, holidays).
We've just had to go to "out of hours" and DH was amazed at how quick it was compared to the hours we used to spend waiting at OOH in the UK. Might just be because we are in quite a small place...

Oh, it's irrelevant whether your apartment is permanent or not. As soon as you move you need to go to the council and register. They will give you a form you can take with you to prove that you are living in the area, giving you access to banking, schools, nurseries, healthcare, etc.
You will also need healthcare as soon as possible. I simply applied for our whole family and the letters came through quickly. Healthcare costs usually are deducted through pay, unless you are earning enough to make private medical insurance worthwhile.

A lot of people, who work at the airport, live in Langen, Neu-Isenburg or Egelsbach. These are all south of Frankfurt.
In Frankfurt itself, Sachsenhausen or Bockenheim are good areas with reasonable access to the airport. Some parts of Niederrad could also suit you. In town Westend and Nordend are smart, but expensive.
Unless your husband is working shifts I would be cautious about Darmstadt or Wiesbaden. Although both are very pleasant, the A3 and A5 are very, very busy roads, especially at rush hour.
Sorry I cannot help on paediatricians or orthodontists. I have a lovely dentist, who speaks good English, but the practice is out of town close to my office.