Congrats on your weight loss! After a ton of searching, I found Frisch's veg. soup information on the Daily Plate, and they report that it has 84 calories in 8 oz. (
http://www.thedailyplate.com/nutriti...table-soup-cup). Your idea of the salad bar and soup sounds great, as long as you can keep away from any tempting high calorie things that they tend to put on the salad bar line, like pasta salad, full fat dressings, cheese, nuts, bacon bits, crispy noodles, etc. I haven't been to a Frisch's, but the above things have definitely made it on my plate at the salad bar before at other restaurants. Have fun!