I dunno. From where we are, airfare to Europe may run more than $1K a piece for economy, then that's $4K already for a couple for 2 trips. The $12K is doable, but each trip cannot be too long.
If one wants business class, then the $12K is not enough for airfares.
I agree. Even booking part of our air with miles and the rest on a discount carrier, air for two from LAX is going to be close to $2K. If we hadn’t had the miles to offset the cost, our air would have been between $3.5K-$4K. If you multiply that by 2, that’s $7-$8K for air alone before any lodging or ground transportation. I don’t see how anyone could do 2 trips to Europe in a year for $12K, at least from the West Coast.