I would say one of the most important things you can do to make a difference in points is to specify that they not use additional oils or butter in preparing your food. I've heard from a Longhorn's employee that they squirt melted butter/oil (like in those bottles that hold ketchup) onto EVERYTHING - steaks, veggies, mushrooms, you name it.
Stick to grilled items - steak, salmon, shrimp or chicken.
For a side, you can get mixed veggies, asparagus, plain baked sweet or regular potato.
Good luck and enjoy!
~*~*~ Lesley ~*~*~
"Our greatest glory is not in never failing, but in rising up every time we fail"
. Ralph Waldo Emerson