Rewarding weight loss with food... Thoughts?

Hiya, folks! Was looking to get some input from you all.

I'm coming up on 20lbs lost soon - hopefully within the next week - which is a little over halfway to my final goal. I've been progressing (slower than I would've liked, but still), and I want to celebrate a little. But, I've heard associating food with rewards can become problematic. The ones closer to my goal weight (10lbs away, 5lbs away) are not food-related. For 20lbs lost, though, I've been wondering about a good, delicious meal (sushi, poké, or pasta) and a big ol' scoop of ice cream from one of my favourite places. I could stick around maintenance or a little under for the day, and I'm highly food-motivated, so it actually might help motivate me. I know getting into the habit isn't ideal, but are occasional indulgences for accomplishments bad? Would this be alright?

Thanks!