Same situation here - using the AB card for those payments with cashback; have just prepaid for a cruise next year via my travel agent which should save me several hundred bucks.

For any other payments and probably for the future I'll use my amex card to gain MR points which can be transferred into those currencies I need for hotel/flight awards quick and easy - and I guess MR points are one of the few currencies quite safe...

Not a fan of LH at the moment and the LH CC has lost most of its attraction for me with the lower earning and me losing SEN after >10 years at the end of last year...

Free now of any airline loyality and credit card affiliation to miles programs. I now only book best fare / best connection. Longhaul in premium classes I get the benfits anyhow, shorthaul I use Prioritypass now which comes with my Amex.

Looking forward to what LBB announces for AB card customers. If they offer a much better insurance package and lower yearly fee, low or no foreign currency fees and some kind of earning (eg. amazon points) or cashback I might stay with them at least as a backup to the amex card which is not accepted everywhere.