I am a dual Polish and American citizen, while my wife and kids are only US citizens. We'd like to spend extended time in Europe (say 89 days in Spain, then 89 days in France, then 89 days in Germany, etc), without becoming residents and continue being treated like tourists.
Since one of us is an EU citizen, the whole family does not have to abide by the Schengen 90/180 days rule? http://europa.eu/youreurope/citizens/travel/entry-exit/non-eu-family/index_en.htm
Am I correct in assuming we do not have to apply for a residence card if we stay only 89 days in Spain, then cross over to France, and spend another 89 days there, then Germany for 89 days, even though no one gets a passport stamp proving that we went to a different Schengen country?
Since we spend less than 6 months in a single EU country, we are not tax-residents of any EU country, and only pay US income taxes? http://europa.eu/youreurope/citizens/work/taxes/income-taxes-abroad/index_en.htm
At one point would we be required to get EU approved health insurance?
We homeschool our kids, would staying less than 90 days in Germany create any issues when it comes to Germany having compulsory schooling for children?
Would I have to present my Polish as opposed to American passport when flying into EU, or when renting apartments through airbnb?