Targeted Mileage Plus Dining Promo: 300 Bonus Miles per $100
Mileage Plus Dining has a targeted One Bite at a Time promo: for every $100 you spend at participating restaurants through December 31, they’ll award an extra 300 bonus miles. The good news is that it’s accrued spend, not $100 in one sitting. YRMV, but no harm in trying to register.
Depending on your existing status, you can earn from 3 1/2 up to 8 miles per $. Participating in this promo could even push you to VIP level.
The deal breaker for me is that they require you to complete dining reviews to qualify. So 10 visits at $10 means 10 reviews to write, although as far as I know, a simple “Good food, decent service.” might suffice.