My husband and son are EU citizens but I am not. We lived for the past nine years in Germany where I had the regular Aufenthaltskarte (residence card; not the Daueraufenthaltskarte for permanent residence) issued to non-EU family members of EU citizens. We recently moved to Austria and so I have applied for an Austrian Aufenthaltskarte, which I am told will be issued in two to three months.
In the meantime I want to take my son to visit my family in Russia. We will be flying out of and back to Vienna. What do I need to do/have to ensure that I have no problems re-entering Austria? In lieu of the Austrian Aufenthaltskarte I could present any or all of the following:
My German Aufenthaltskarte. This is probably no longer valid since we de-registered our residence in Germany, but maybe the Russian airline and Russian/Austrian border officials wouldn't know that, or would accept it anyway even if they could check its validity.
My Einreichbestätigung (i.e., the official confirmation from Vienna's Municipal Department for Immigration and Citizenship that I have applied for a residence card). This is available only in German so it might not satisfy Russian officials.
ID or copies thereof proving my identity and my marriage to an EU citizen and our residence in Austria: my passport, a copy of my husband's passport, our marriage certificate, a copy of my husband's Anmeldebescheinigung (Austrian registration certificate), and our Meldezettel (municipal registration certificates).
And of course, I will be travelling with my son who has an EU passport and Austrian registration certificates.
Would these documents be sufficient, or do I need to go to the trouble of applying for a Schengen visa? If so, since I am already in Austria, where in Vienna would I apply? All the information about Schengen visas I can find online states that I need to apply at an Austrian consulate, but of course there are no Austrian consulates in Austria.