Amounts or not, as you've stated, Credit Cards are there for this particular reason. For instance, if you carry a Premier Card from HSBC or AMEX Black Card (Centurion), there is no limit to what you can purchase
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When I've mentioned Half Sisters and Half Brothers, I mean HM the Queen's sons and daughters...not the adopted siblings. That said, this is all mere curiosity because in the near future they will most probably be back in Brunei and marry someone local and live the same life HM the Queen's daughters and sons live, which on my humble opinion is absolutely borring
. Wish Brunei Royals were more active like some Middle East Royals maybe?