If that’s what you got Curve Metal for, just get an American Express Gold Rewards card.
It’s a lot cheaper, lounge access is £20 flat rate but your first two visits are free.
AND you get Membership Rewards, which is just about the best card rewards scheme on the market and more than pays for the annual fee in itself if you have enough spending.
Promising and not delivering seems to be a speciality of Curve recently, sadly.
Given that the fintech world supposedly works 7x faster than the rest of the world, their definition of “soon” really pushes the boundaries too!