Received the email too,
Shame & stupid of me that i forgot to ask at Kimpton London!

It would be helpful when these F&B vouchers work,
that members would post their published value ($20) in their local currency of their stayed hotel.

IE: example format:

IHG F&B $20 voucher on DEC 2022 = €19,31 value in The Netherlands | confirmed Voco The Hague)