Absolutely positively make sure you have a prenuptial agreement set up. Many a man have said "oh but she's different" only to end up with a 0 bank account and no place to live.
Yes, I've had no issues with using my credit cards at any vendors I shop. The only time I've had difficulty is occasional online orders. Most of the time it's a problem with the vendor's system, not my credit cards.
Perhaps for some banks that aren't used to international customers, but I use my cards all over and no need to tell anyone the details. I might go to Japan this week and Dubai next week and USA after that. If you have to report all of this to your card issuer, I'd drop the card and go to someone else!