Pet when I travel on business I usually do ok. Make sure that you have a mini fridge in your room and fill it with low carb stuff. room service usually can modify to low carb or just throw out the bun etc. Shrimp cocktail is usually a good option too if you limit the cocktail sauce.

If you find yourself in the bar with a group, order some hot wings and have a glass of red wine.

I was travelling on business for 10 days in march and I lost 3 lbs.

Good Luck.