I used to have an Amex card for work, linked to my BA account. So, I’d buy tickets on the card (earning Avii (Plural?)), then fly (earning Avii) to somewhere where I’d pay for almost everything on that card (earning Avii).
It got a bit silly. I had (and still have!) too many of the damned things. Then I discovered that you can buy wine with them. Which was nice. 🙂
Using Avios points for flights can be good, but v hit and miss re availability. A far better use of them, if not for wine, is to upgrade. So, you buy a WT+ ticket, and use Avii to upgrade to the comfy seats.
New corporate card is Mastercard. Boo. Hiss. Etc.