My own thinking is their US passport was suspended which is required to remain in Portugal if you are a holder of a temporary residence card and they had to leave??

Your mindset is corrupted if you only think about leaving your job to be free.

The struggle to understand the US culture is a major concern for me.

The tenant is going to leave no matter what you say, so you should figure out how to let them go while ensuring there's no loss of income.I suggest you remind the tenant they are contractually obligated to pay rent and other costs until a new tenant is found.

If you set it as November 20th and a tenant still hasn't occupied by that date, leave it.

Yes, you do get income on the other side, but the prices have bumped up so with interest rates and less inventory to buy, the net income is much less than a few years ago.You can still do it, you just have to factor that in and expect negative cash flow while you live there and then see how good it will be when you leave in a year and do it again.

As mentioned if you're concerned, just keep a close eye on your credit profile during that period!

If you can get an ARV/appraisal at $160-165k, that's good but you might need to leave a little bit of money in the deal.

While I have seen only good things said about PPR, one thing of concern is that even though they started  during the great recession they do not have a track record of weathering one.

This is very well worded, and I believe covers most new investors' concerns and questions.