I heard its good to have a credit card when you leave the USA (better fraud protection).

There are some credit cards that give point bonus if you spend 1000$ within say 90 days. I don't usually pay for things, I'm in parents basement, not paying for anything now. But I will obviously pay for the surgery and everything when I'm in Greece

I don't think I want to pay for the surgery w/ the credit card but I do want to get those points. Idk should I time it that I get the credit card started right before coming to Greece? Is it pretty realistic to be able to spend 1000$ w/ the credit card on things I need within 90 days or a bit less? Needs to be a bit less I guess to make sure I get the card maybe 2 weeks before I leave the USA