Is it unrealistic to expect weight loss while drinking twice a week? (I exercise hard)

‌In my 50s
Average height. Body fat 16%...
Exercise - Gym 4–5 times a week (20 min weights / 40 min stepper or treadmill) + 30 min golf
Diet - No breakfast
- Lunch: Company cafeteria. Half a bowl of rice, eat side dishes well
- Dinner: Half a bowl of rice. Protein-focused side dishes
For the treadmill, I mostly do intervals: 5 min at incline 9 / 10 min at incline 12 / 15 min at incline 15 / then 10 min while decreasing the incline.
But even with this, neither my weight nor body fat percentage is dropping from 16% haha ;;
If I increase my workout time to 2 hours, I can get down to the 15% range, but it's too exhausting.
I tend to drink about twice a week for work (1.5 bottles of Soju + 2 bottles of beer) and eat plenty of snacks/appetizers along with it.
Should I just be grateful if I can at least maintain my current state? ㅜㅜ