I'll go through the whole menu for you...
Chilli con carne (without sour cream)
Tostada (no cheese)
Any of the salads (dressing on side)
Any of the steaks (plus salad and vegetables)
Any of the fajitas (SOUND DELICIOUS!)
I've been VERY strict. You may want to have a little more fun. Just be careful of the cheese (generally at Mexican restaurants they go overboard), sour cream and garlic butter. People forget the fat content of these things! It sounds like you will have a great night. Let me know how it goes!!!
To succeed you need to find something to hold on to, something to motivate you, something to inspire you - Myself (Lauren)