Wsop for British player

I’m heading to the WSOP in 2027 for the first time.

As a Brit, what’s the easiest way to buy in for tournament?
I can withdraw $2000 a day cash, but when I’ve tried to get cash from the cage in vegas with my debit card, it’s never worked. Can I enter with cash?

To enter on card, are the entries classed as regular card transactions or gaming? Which is why I think I had trouble in the past in vegas.