I might be totally misremembering, but I don’t think they own many vineyards at all (though are looking to change this somewhat). I think it was an Ex Animo podcast I was listening to when Chris and Suzaan were describing fruit supply - leasing vineyards, managing how the land and fruit is treated and ensuring continuity of supply. The loss of the Radio Lazarus vineyard (drought) was a blow, but it wasn’t their land at least.
I’d imagine most of the fruit they use will be from leased or contracted vineyards, rather then just seeing what’s available at harvest. Alheit seems to sell out everywhere, every year, so it’s not a massive leap to suggest expansion was planned for. If Chris has secured a lot of fruit on a forward contract, current market conditions were probably unanticipated, so why not use the scale of TWS to sell it all, rather than sit around in bottle?
Jo was hopeful that we might see another vintage as well, so we might see some of the that sweet 2020 vintage too.